CH 5 SUM: Support and transport systems in plants
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Questions and Answers

What is the primary function of roots in a plant?

  • Transport of oxygen
  • Storage of air
  • Anchorage to the ground (correct)
  • Absorption of sunlight

    • Which layer of a dicotyledonous root is characterized by the Casparian strip?

  • Epidermis
  • Stele
  • Endodermis (correct)
  • Cortex

    • What is the main function of the epidermis in a dicotyledonous root?

  • Facilitating water movement
  • Photosynthesis
  • Protection and absorption (correct)
  • Storage of nutrients

    • Which part of the root system in dicotyledonous plants develops from the radicle?

    <p>Primary root</p> Signup and view all the answers

    What is the main role of the cortex in a dicotyledonous root?

    <p>Nutrient storage and water movement</p> Signup and view all the answers

    Which layer of a dicotyledonous root does not have a waterproof cuticle?

    <p>Cortex</p> Signup and view all the answers

    What is the primary function of xylem in a plant?

    <p>Aids in upward transport of water and mineral salts</p> Signup and view all the answers

    Which layer in dicotyledonous roots regulates water flow to the xylem and phloem?

    <p>Endodermis</p> Signup and view all the answers

    What is the primary role of transpiration in plant physiology?

    <p>Regulates plant temperature</p> Signup and view all the answers

    How do dicotyledonous and monocotyledonous stems differ?

    <p>By their seed leaves or cotyledons</p> Signup and view all the answers

    What is the primary function of stems in plants?

    <p>Support and positioning of leaves for sunlight exposure</p> Signup and view all the answers

    From which plant part does a dicotyledonous stem develop?

    <p>Epicotyl</p> Signup and view all the answers

    Which tissues provide structural integrity and resilience in dicotyledonous stems?

    <p>Support and strength tissues like collenchyma and sclerenchyma</p> Signup and view all the answers

    Why is the pericycle important in dicotyledonous roots?

    <p>To provide structural integrity and support lateral root growth</p> Signup and view all the answers

    Which cells in the stem's cortex store nutrients and participate in gaseous exchange?

    <p>Parenchyma cells</p> Signup and view all the answers

    What type of tissue contributes to the formation of wood and bark during secondary growth?

    <p>Cambium</p> Signup and view all the answers

    Which cells in the root provide mechanical support and strength?

    <p>Sclerenchyma cells</p> Signup and view all the answers

    Which root system is common in dicotyledonous plants, forming a deep and sturdy structure?

    <p>Tap root system</p> Signup and view all the answers

    What is the primary function of phloem in plants?

    <p>Distribution of food and nutrients</p> Signup and view all the answers

    Which layer in the stem's vascular cylinder is involved in secondary growth?

    <p>Cambium</p> Signup and view all the answers

    What is the primary function of epidermis in the stem?

    <p>Protection and prevention of water loss</p> Signup and view all the answers

    Which type of root system is typically seen in monocotyledonous plants, forming a shallow, mat-like structure?

    <p>Fibrous or adventitious root system</p> Signup and view all the answers

    What is the main function of the cortex in a plant stem?

    <p>Storing nutrients and passively moving them</p> Signup and view all the answers

    Which tissue facilitates the radial growth of the stem by aiding in the growth of xylem and phloem?

    <p>Vascular Cambium</p> Signup and view all the answers

    What is the primary purpose of root hairs found on plant roots?

    <p>Absorbing water and minerals</p> Signup and view all the answers

    Which pathway does water primarily move through to reach the Casparian strip in the endodermis?

    <p>Apoplast Pathway</p> Signup and view all the answers

    In which part of a plant are mineral salts actively absorbed using energy to move against their concentration gradient?

    <p><strong>Root Hairs</strong></p> Signup and view all the answers

    What is the visible indicator in the cross-section of woody stems that reveals growth patterns through seasons?

    <p><strong>Annual Rings</strong></p> Signup and view all the answers

    Which structure in a plant stem strengthens it and protects the vascular tissues?

    <p><strong>Pericycle</strong></p> Signup and view all the answers

    What is the process responsible for pushing water up through the xylem towards the leaves of a plant?

    <p><strong>Root Pressure</strong></p> Signup and view all the answers

    What phenomenon helps water rise through the narrow tubes in the xylem?

    <p>Capillary action</p> Signup and view all the answers

    What is the main sugar transported through the phloem?

    <p>Sucrose</p> Signup and view all the answers

    What process requires energy for sugar transport in plants?

    <p>Active transport</p> Signup and view all the answers

    What causes water to move into sieve tubes in the phloem?

    <p>Accumulation of sugar</p> Signup and view all the answers

    How can the effect of root pressure be observed?

    <p>By measuring the rise of water in a capillary tube attached to a watered pot plant</p> Signup and view all the answers

    How does adhesion contribute to water movement in plants?

    <p>By causing water molecules to stick to the walls of the xylem tubes</p> Signup and view all the answers

    What can be quantified by measuring the speed of movement of an air bubble in a capillary tube attached to a leafy shoot?

    <p>Rate of transpiration</p> Signup and view all the answers

    What best describes the movement of water and minerals in vascular plants?

    <p>Capillary action and osmosis</p> Signup and view all the answers

    What is the main function of the Pericycle in a dicotyledonous root?

    <p>Strengthening the root structure</p> Signup and view all the answers

    Which layer of a dicotyledonous stem is responsible for minimizing water loss?

    <p>Endodermis</p> Signup and view all the answers

    What is the primary role of the Cambium in plant stems?

    <p>Storing nutrients and water</p> Signup and view all the answers

    Which tissue in a dicotyledonous stem provides structural integrity and resilience?

    <p>Epidermis</p> Signup and view all the answers

    What is the primary function of the Exodermis in dicotyledonous roots?

    <p>Transporting water and nutrients</p> Signup and view all the answers

    How does the Transpirational Pull play a role in plant physiology?

    <p>Providing structural support to position leaves, flowers, and fruits</p> Signup and view all the answers

    What is the outermost layer of a dicotyledonous root called?

    <p>Epidermis</p> Signup and view all the answers

    What is the primary role of the cortex in a dicotyledonous stem?

    <p>Storage of nutrients and passive movement of nutrients</p> Signup and view all the answers

    What type of cells make up the cortex of a dicotyledonous root?

    <p>Parenchyma</p> Signup and view all the answers

    Which layer of a dicotyledonous root has a waterproof barrier called the Casparian strip?

    <p>Endodermis</p> Signup and view all the answers

    Which layer in a dicotyledonous root regulates water flow to the xylem and phloem?

    <p>Endodermis</p> Signup and view all the answers

    What structure gives rise to lateral roots in a dicotyledonous root?

    <p>Pericycle</p> Signup and view all the answers

    What is the main function of xylem in a plant?

    <p>Transporting water and minerals up from the roots</p> Signup and view all the answers

    Which structure in a plant stem strengthens it and protects the vascular tissues?

    <p>Pericycle</p> Signup and view all the answers

    Which layer of a dicotyledonous root does not have a waterproof cuticle?

    <p>Cortex</p> Signup and view all the answers

    Where are root hairs found in a plant?

    <p>On the roots</p> Signup and view all the answers

    What is the main function of the root hairs in a dicotyledonous root?

    <p>Water and mineral absorption</p> Signup and view all the answers

    What is the primary function of transpiration in plant physiology?

    <p>Movement of water and dissolved substances through the plant</p> Signup and view all the answers

    What is the primary role of the pith in a dicotyledonous stem?

    <p>To store nutrients and facilitate transport of substances</p> Signup and view all the answers

    What is the function of the cambium in dicotyledonous plants?

    <p>To divide and produce new phloem and xylem</p> Signup and view all the answers

    Which type of root system is common in dicotyledonous plants?

    <p>Tap root system</p> Signup and view all the answers

    What is the primary function of the pericycle in dicotyledonous roots?

    <p>To contribute to the formation of secondary vascular tissues</p> Signup and view all the answers

    What is the main function of the epidermis in a dicotyledonous stem?

    <p>To protect the stem with a waxy cuticle and facilitate respiration and transpiration</p> Signup and view all the answers

    Which cells in the cortex of a dicotyledonous stem store nutrients?

    <p>Parenchyma cells</p> Signup and view all the answers

    What is the primary function of phloem in plants?

    <p>Transporting sucrose from leaves to other parts of the plant</p> Signup and view all the answers

    What causes water to move into sieve tubes in the phloem?

    <p>Accumulation of sugar</p> Signup and view all the answers

    Which process in plants involves moving sucrose against its concentration gradient?

    <p>Sugar transport</p> Signup and view all the answers

    How can the effect of root pressure be observed?

    <p>By measuring the rise of water in a capillary tube attached to a watered pot plant</p> Signup and view all the answers

    What is the primary force responsible for the movement of water against gravity in plants?

    <p>Adhesion and cohesion</p> Signup and view all the answers

    Which part of the plant has the highest concentration of sucrose during sugar transport?

    <p>Leaves</p> Signup and view all the answers

    What is the main function of the cork cambium in plants?

    <p>Generates a protective bark layer for support</p> Signup and view all the answers

    Which structure blocks water movement along the apoplast pathway in roots?

    <p>Endodermis Casparian strip</p> Signup and view all the answers

    What is the mechanism by which water enters and exits cells through cell membranes?

    <p>Transmembrane pathway</p> Signup and view all the answers

    Which pathway ensures all water and dissolved substances pass through a cell membrane to reach the vascular cylinder?

    <p>Control at the endodermis</p> Signup and view all the answers

    In plant roots, what process primarily involves water absorption through osmosis?

    <p>Absorption of water and mineral salts into roots</p> Signup and view all the answers

    What is the purpose of root pressure in plants?

    <p>Assists in pushing water up through the xylem towards leaves</p> Signup and view all the answers

    Which tissue layer in the stem aids in the production of new tissue?

    <p>Cambium</p> Signup and view all the answers

    What is the main function of the cortex in a dicotyledonous stem?

    <p>All of the above</p> Signup and view all the answers

    Which tissue layer in the dicotyledonous root regulates water flow to the xylem and phloem?

    <p>Endodermis</p> Signup and view all the answers

    Which cell type in the stem provides mechanical support and strength?

    <p>Sclerenchyma</p> Signup and view all the answers

    Which cell type is responsible for storing nutrients in the stem cortex?

    <p>Parenchyma</p> Signup and view all the answers

    Which type of cell is involved in radial growth during secondary growth in the stem?

    <p>Cambium</p> Signup and view all the answers

    Which layer of a dicotyledonous root is responsible for nutrient storage and facilitating the movement of water towards the inner layers?

    <p>Cortex</p> Signup and view all the answers

    Which layer in a dicotyledonous root has a waterproof barrier called the Casparian strip that controls water movement into the vascular cylinder?

    <p>Endodermis</p> Signup and view all the answers

    Which organelle is responsible for pushing water up through the xylem towards the leaves of a plant?

    <p>None of the above</p> Signup and view all the answers

    Which layer in a dicotyledonous stem is involved in secondary growth?

    <p>Cambium</p> Signup and view all the answers

    Which process requires energy for sugar transport in plants?

    <p>Active transport</p> Signup and view all the answers

    Which tissue in a dicotyledonous stem provides structural integrity and resilience?

    <p>Sclerenchyma</p> Signup and view all the answers

    What is the process that allows water to rise in the xylem against gravity?

    <p>Capillarity</p> Signup and view all the answers

    What is the primary energy-dependent process involved in the transport of sucrose in plants?

    <p>Active loading</p> Signup and view all the answers

    Which process facilitates the movement of water into sieve tubes in the phloem?

    <p>Osmosis</p> Signup and view all the answers

    How can the rate of transpiration in a plant be quantified?

    <p>By measuring the speed of movement of an air bubble in a capillary tube attached to a leafy shoot</p> Signup and view all the answers

    Which of the following processes does NOT require energy in plants?

    <p>Capillarity in the xylem</p> Signup and view all the answers

    What causes water to rise through narrow tubes in the xylem?

    <p>The forces of cohesion and adhesion</p> Signup and view all the answers

    What is the primary function of the Exodermis in dicotyledonous roots?

    <p>Providing shape, protection, and strength to the root</p> Signup and view all the answers

    Which tissue in a dicotyledonous stem is essential for asexual reproduction methods?

    <p>Cambium</p> Signup and view all the answers

    What tissue is responsible for regulating plant temperature via evaporative cooling?

    <p>Epidermis</p> Signup and view all the answers

    What is the main function of the Pericycle in a dicotyledonous root?

    <p>Encircling the stele and contributing to structural integrity</p> Signup and view all the answers

    What is the primary function of the Collenchyma tissue in a dicotyledonous stem?

    <p>Supporting and strengthening the stem</p> Signup and view all the answers

    What is the primary role of the Cortex in a dicotyledonous stem?

    <p>Storing food and nutrients</p> Signup and view all the answers

    What is the primary reason for water rising through narrow tubes in the xylem?

    <p>Adhesion between water molecules and xylem tube walls</p> Signup and view all the answers

    How is sucrose transported to various parts of a plant through the phloem?

    <p>Active loading into sieve tubes followed by osmosis</p> Signup and view all the answers

    What drives water movement into the sieve tubes in the phloem?

    <p>High sucrose concentration causing osmosis</p> Signup and view all the answers

    Which investigative method involves observing the effect of root pressure in plants?

    <p>Watching the rise of water in a capillary tube attached to a plant</p> Signup and view all the answers

    What provides the energy required for actively loading sucrose into sieve tubes?

    <p>Respiration by mitochondria</p> Signup and view all the answers

    In which plant vascular tissue does sugar accumulation primarily lead to water movement by osmosis?

    <p>Phloem sieve tubes</p> Signup and view all the answers

    How does the movement of an air bubble in a capillary tube help quantify transpiration rates?

    <p>Measuring speed indicates transpiration rates</p> Signup and view all the answers

    What practical investigation helps understand how adhesion and cohesion contribute to water movement against gravity?

    <p>Noting water rise in glass tubes of various diameters</p> Signup and view all the answers

    What is the primary role of the epidermis in a dicotyledonous root?

    <p>To increase surface area for water and mineral absorption</p> Signup and view all the answers

    Which layer in the dicotyledonous root contains the Casparian strip?

    <p>Endodermis</p> Signup and view all the answers

    What is the primary role of the pericycle in a dicotyledonous root?

    <p>To give rise to lateral roots</p> Signup and view all the answers

    Which type of root system is typical for dicotyledonous plants?

    <p>Taproot system</p> Signup and view all the answers

    Which layer in a dicotyledonous root is responsible for nutrient storage and facilitating the movement of water towards the inner layers?

    <p>Cortex</p> Signup and view all the answers

    Which layer in the stem's vascular cylinder is involved in secondary growth?

    <p>Cambium</p> Signup and view all the answers

    Which structure in a plant stem strengthens it and protects the vascular tissues?

    <p>Collenchyma</p> Signup and view all the answers

    Which structure blocks water movement along the apoplast pathway in roots?

    <p>Endodermis</p> Signup and view all the answers

    What is the primary function of the endodermis in a dicotyledonous root?

    <p>Regulates water flow to the xylem and phloem</p> Signup and view all the answers

    Which tissue primarily contributes to the radial growth of a dicotyledonous stem?

    <p>Cambium</p> Signup and view all the answers

    Which process primarily involves the movement of water upwards from the roots to the leaves in a plant?

    <p>Capillary action</p> Signup and view all the answers

    What is the main function of the pericycle in a dicotyledonous root?

    <p>Facilitates the formation of lateral roots</p> Signup and view all the answers

    Which tissue layer primarily provides mechanical support and strength in a dicotyledonous stem?

    <p>Xylem</p> Signup and view all the answers

    Which process primarily involves the absorption of water and mineral salts in a plant?

    <p>Osmosis</p> Signup and view all the answers

    Which cell type primarily contributes to the radial growth of a dicotyledonous stem?

    <p>Cambium</p> Signup and view all the answers

    Which tissue layer primarily ensures water and dissolved substances pass through to reach the vascular cylinder in a dicotyledonous root?

    <p>Endodermis</p> Signup and view all the answers

    What is the main function of phloem in dicotyledonous plants?

    <p>Distribution of sugars and nutrients produced by photosynthesis</p> Signup and view all the answers

    Which tissue layer in a dicotyledonous stem is responsible for secondary growth?

    <p>Cambium</p> Signup and view all the answers

    Which layer in a dicotyledonous root has a waterproof barrier called the Casparian strip?

    <p>Endodermis</p> Signup and view all the answers

    What is the primary function of the pericycle in dicotyledonous roots?

    <p>Contribution to the formation of secondary vascular tissues</p> Signup and view all the answers

    What is the main function of the cortex in a dicotyledonous stem?

    <p>Storage of nutrients and water</p> Signup and view all the answers

    What can be quantified by measuring the speed of movement of an air bubble in a capillary tube attached to a leafy shoot?

    <p>Transpiration rate</p> Signup and view all the answers

    Which tissue layer in the stem aids in the production of new tissue?

    <p>Cambium</p> Signup and view all the answers

    What is the primary function of root hairs found on plant roots?

    <p>Absorption of water and dissolved minerals</p> Signup and view all the answers

    What is the primary function of the Endodermis in a dicotyledonous stem?

    <p>To regulate water and nutrient movement into the vascular bundles</p> Signup and view all the answers

    Which type of pathway allows water to move across cell membranes in a plant's root system?

    <p>Transmembrane Pathway</p> Signup and view all the answers

    What is the primary function of the Vascular Cambium in a dicotyledonous stem?

    <p>To produce new cells and aid in the growth of xylem and phloem</p> Signup and view all the answers

    Which tissue layer in a dicotyledonous root is responsible for regulating water flow to the xylem and phloem?

    <p>Endodermis</p> Signup and view all the answers

    What is the primary function of stomata in a plant?

    <p>To serve as the primary site for gaseous exchange and water vapor exit during the day</p> Signup and view all the answers

    Which type of cells are responsible for the secondary growth in a dicotyledonous stem?

    <p>Cork cambium cells</p> Signup and view all the answers

    How do mineral salts enter a plant cell?

    <p>By active transport using energy to move against their concentration gradient</p> Signup and view all the answers

    What is the main function of the Pericycle in a dicotyledonous stem?

    <p>To strengthen the stem and protect vascular tissues</p> Signup and view all the answers

    What key role does the Pericycle play in dicotyledonous plant roots?

    <p>Supports the plant's structural integrity</p> Signup and view all the answers

    Which of the following is a primary function of the Exodermis in dicotyledonous roots?

    <p>Provides protection and strength</p> Signup and view all the answers

    What primary purpose do root hairs serve in dicotyledonous roots?

    <p>Facilitate water and mineral absorption</p> Signup and view all the answers

    In dicotyledonous stems, what is the main function of the Cambium tissue?

    <p>Produces new xylem and phloem tissues</p> Signup and view all the answers

    What is the primary function of the pericycle in dicotyledonous roots?

    <p>Producing secondary vascular tissues</p> Signup and view all the answers

    Which layer in a dicotyledonous stem plays a role in the transport of substances across the stem?

    <p>Pith</p> Signup and view all the answers

    What distinctive feature of dicotyledonous stems supports their structural integrity and resilience?

    <p>Collenchyma and sclerenchyma tissues</p> Signup and view all the answers

    What is a key function of the transpirational pull in plants?

    <p>Drives upward movement of water and nutrients</p> Signup and view all the answers

    What serves as the structural support in dicotyledonous plants and becomes denser over time?

    <p>Heartwood</p> Signup and view all the answers

    Which tissue in roots is responsible for providing mechanical support and strength?

    <p>Sclerenchyma</p> Signup and view all the answers

    What is the primary purpose of the epidermis in dicotyledonous stems?

    <p>Acts as an outer protective layer</p> Signup and view all the answers

    What layer in a dicotyledonous stem may have trichomes and stomata for respiration and transpiration?

    <p>Epidermis</p> Signup and view all the answers

    In dicotyledonous roots, which part originates from the radicle during germination?

    <p>Root System</p> Signup and view all the answers

    Which process contributes to the upward movement of water from the roots to the leaves in plants?

    <p>Transpiration</p> Signup and view all the answers

    Which tissue layer in a dicotyledonous root is responsible for the initiation of lateral root formation?

    <p>Pericycle</p> Signup and view all the answers

    Which structure in a dicotyledonous root is responsible for preventing the passage of water along the apoplast pathway?

    <p>Casparian Strip</p> Signup and view all the answers

    Which tissue layer in the dicotyledonous root contains the Casparian strip, ensuring controlled water flow to the vascular cylinder?

    <p>Endodermis</p> Signup and view all the answers

    Which tissue layer in a dicotyledonous root is composed mainly of parenchyma cells and stores nutrients?

    <p>Cortex</p> Signup and view all the answers

    Which tissue layer in the stem aids in the production of new tissue and is involved in secondary growth?

    <p>Cambium</p> Signup and view all the answers

    Which tissue layer in a dicotyledonous root is responsible for sturdy anchorage to the ground and water absorption?

    <p>Epidermis</p> Signup and view all the answers

    Which structure in a dicotyledonous stem strengthens it and protects the vascular tissues?

    <p>Sclerenchyma</p> Signup and view all the answers

    Which process primarily involves the absorption of water and mineral salts in a dicotyledonous plant?

    <p>Absorption</p> Signup and view all the answers

    Which of the following processes primarily involves the movement of water and dissolved substances through the cell membrane in the root endodermis?

    <p>Transmembrane pathway</p> Signup and view all the answers

    Which of the following processes is energy-dependent and primarily involves moving sucrose against its concentration gradient in plants?

    <p>Active transport</p> Signup and view all the answers

    Which of the following structures in a plant stem provides mechanical support and strength?

    <p>Pericycle</p> Signup and view all the answers

    Which of the following processes allows water to move across cell membranes in a plant's root system?

    <p>Transmembrane pathway</p> Signup and view all the answers

    Which of the following processes primarily involves the absorption of water and mineral salts in a plant?

    <p>Absorption</p> Signup and view all the answers

    Which of the following processes primarily involves the movement of water and dissolved substances through the cell walls and intercellular spaces without crossing cell membranes in the root?

    <p>Apoplast pathway</p> Signup and view all the answers

    Which of the following processes primarily involves the movement of sugars from photosynthetic parts to non-photosynthetic parts in a plant?

    <p>Translocation</p> Signup and view all the answers

    Which of the following processes primarily involves the movement of dissolved substances through the cytoplasm of interconnected cells in a plant?

    <p>Symplast pathway</p> Signup and view all the answers

    What is the primary force responsible for the accumulation of sugar in the sieve tubes during sugar transport?

    <p>Active transport</p> Signup and view all the answers

    How does the experiment of measuring the rise of water in a capillary tube attached to a watered pot plant help understand root pressure?

    <p>It illustrates the role of root pressure in water uptake</p> Signup and view all the answers

    What is the role of adhesion in the process of water movement against gravity in plants?

    <p>It helps water molecules to stick to the walls of the xylem tubes</p> Signup and view all the answers

    Which of the following is not a function of the cortex in a plant stem?

    <p>Mechanical support</p> Signup and view all the answers

    What is the main difference between the process of sugar transport and the movement of water in plants?

    <p>Sugar transport involves active loading, while water movement is passive</p> Signup and view all the answers

    Which of the following is not a role of the pericycle in dicotyledonous roots?

    <p>It provides mechanical support and strength</p> Signup and view all the answers

    What is the significance of the Casparian strip in a dicotyledonous root?

    <p>It prevents the movement of water and minerals through the apoplast pathway</p> Signup and view all the answers

    How does the experiment of measuring the speed of movement of an air bubble in a capillary tube attached to a leafy shoot help understand the rate of transpiration?

    <p>It quantifies the rate of transpiration under various conditions</p> Signup and view all the answers

    What is the function of the Casparian strip in a dicotyledonous root?

    <p>Acts as a water-impermeable barrier controlling water entry into the vascular cylinder</p> Signup and view all the answers

    Which layer of a dicotyledonous root primarily functions in facilitating lateral root growth?

    <p>Stele (Vascular Cylinder)</p> Signup and view all the answers

    What is the main role of the phloem in a dicotyledonous root?

    <p>Transports organic nutrients like sugars</p> Signup and view all the answers

    Which structure in a dicotyledonous root ensures easy water absorption due to the lack of a waterproof cuticle?

    <p>Cortex</p> Signup and view all the answers

    What is the primary function of the parenchyma cells in the cortex of dicotyledonous roots?

    <p>Storing nutrients and facilitating water movement</p> Signup and view all the answers

    In dicotyledonous roots, what layer plays a crucial role in increasing the surface area for water and mineral absorption?

    <p>Epidermis</p> Signup and view all the answers

    What is the primary function of the Casparian strip in the endodermis of a plant root?

    <p>Preventing water movement through the symplast pathway</p> Signup and view all the answers

    Which pathway for water movement in plant roots involves water moving across cell walls and intercellular spaces without crossing cell membranes?

    <p>Apoplast Pathway</p> Signup and view all the answers

    In plant roots, what role do root hairs play in the absorption of water and minerals?

    <p>Increasing surface area for absorption</p> Signup and view all the answers

    Which part of the plant stem is responsible for producing cork cells that form the bark?

    <p>Cork Cambium</p> Signup and view all the answers

    What is the mechanism primarily responsible for mineral salts absorption in plants against their concentration gradient?

    <p>Active Transport</p> Signup and view all the answers

    Which process in plants creates root pressure that assists in pushing water up through the xylem towards the leaves?

    <p>Root Pressure</p> Signup and view all the answers

    Which tissue in a dicotyledonous stem is responsible for the production of new tissue that leads to secondary growth?

    <p>Vascular Cambium</p> Signup and view all the answers

    Which cell type in the stem cortex is primarily responsible for nutrient storage and gaseous exchange?

    <p>Parenchyma cells</p> Signup and view all the answers

    Which tissue in a dicotyledonous root regulates water flow to the xylem and phloem?

    <p>Endodermis</p> Signup and view all the answers

    What is the main function of the pericycle in a dicotyledonous stem?

    <p>Contributes to the formation of secondary vascular tissues during plant growth</p> Signup and view all the answers

    Which process primarily involves the absorption of water and mineral salts in a plant?

    <p>Transpiration</p> Signup and view all the answers

    Which tissue layer in the stem cortex primarily contributes to the radial growth of a dicotyledonous stem?

    <p>Sclerenchyma cells</p> Signup and view all the answers

    Which process in plants ensures that sugar is actively loaded into the sieve tubes of the phloem against its concentration gradient?

    <p>Active transport</p> Signup and view all the answers

    What causes water to move into the sieve tubes of the phloem during sugar transport?

    <p>Osmosis</p> Signup and view all the answers

    What is the primary factor that allows water to rise through the narrow tubes in the xylem?

    <p>Capillary action</p> Signup and view all the answers

    Which of the following is not true regarding the phloem tissue in plants?

    <p>It transports water and mineral salts from roots to other parts of the plant.</p> Signup and view all the answers

    Which process quantifies the rate of transpiration under various environmental conditions?

    <p>Measuring the speed of movement of an air bubble in a capillary tube attached to a leafy shoot.</p> Signup and view all the answers

    Which process in plants primarily involves the movement of sugars from photosynthetic parts to non-photosynthetic parts?

    <p>Translocation</p> Signup and view all the answers

    What is the primary function of the Casparian strip in the endodermis of a dicotyledonous root?

    <p>To regulate water flow to the xylem and phloem</p> Signup and view all the answers

    What is the main function of the pericycle in a dicotyledonous stem?

    <p>To provide mechanical support and strength</p> Signup and view all the answers

    Which process ensures that all water and dissolved substances pass through a cell membrane to reach the vascular cylinder in a dicotyledonous root?

    <p>Osmosis</p> Signup and view all the answers

    What is the main function of the xylem in a dicotyledonous stem?

    <p>To transport water and dissolved minerals</p> Signup and view all the answers

    What is the primary function of the phloem in a dicotyledonous stem?

    <p>To transport sugars and other organic nutrients</p> Signup and view all the answers

    What is the role of the epidermis in a dicotyledonous stem?

    <p>To protect the plant from water loss and environmental stresses</p> Signup and view all the answers

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