CH 5: Uptake of Water and Minerals in Plant Roots
58 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

How do root hairs increase the absorption of water and minerals from the soil?

  • By releasing excess water back into the soil
  • By decreasing the surface area available for absorption
  • By conducting photosynthesis
  • By increasing the surface area available for absorption (correct)

    • In the process of osmosis in root hairs, water molecules move from __________.

  • the xylem to the phloem
  • inside the root to the soil
  • an area of higher water concentration to an area of lower water concentration (correct)
  • an area of lower water concentration to an area of higher water concentration

    • How are mineral salts absorbed by plant cells from the soil?

  • Through photosynthesis
  • Through transpiration
  • Passively by diffusion
  • Actively by moving against their concentration gradient (correct)

    • Which structure in the root prevents water movement along the apoplast pathway?

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

    How does water move through the symplast pathway in roots?

    <p>Through interconnected cytoplasm of cells</p> Signup and view all the answers

    Which pathway involves water moving along cell walls and intercellular spaces without crossing cell membranes?

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

    Active transport of minerals involves moving them __________ their concentration gradient.

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

    What is the role of root hairs in the uptake of water and minerals from the soil?

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

    What is the role of the Casparian strip at the endodermis?

    <p>It acts as a barrier forcing substances to enter the symplast to reach the vascular cylinder.</p> Signup and view all the answers

    What is translocation in plants?

    <p>Process by which water and minerals are moved from roots to leaves.</p> Signup and view all the answers

    How does root pressure contribute to water movement in plants?

    <p>It generates pressure to push water up through the xylem.</p> Signup and view all the answers

    What is the primary force driving capillarity in plant physiology?

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

    How does sugar transport occur in plants?

    <p>Actively loading sucrose into sieve tubes of the phloem</p> Signup and view all the answers

    What causes water to move into sieve tubes of phloem in plants?

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

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

    <p>Investigation of capillarity</p> Signup and view all the answers

    'Translocation' is essential for which aspect of plant physiology?

    <p>Water movement from roots to leaves</p> Signup and view all the answers

    What practical investigation is used to observe the rise of water in capillary tubes due to root pressure?

    <p>Investigation of root pressure</p> Signup and view all the answers

    What is the primary function of sugar transport in plants?

    <p>Actively loading sucrose into sieve tubes for transportation</p> Signup and view all the answers

    Which pathway for water movement involves crossing cell membranes?

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

    What process primarily facilitates the absorption of water through root hairs?

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

    Which structure in the root prevents water movement along the apoplast pathway?

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

    How are mineral salts absorbed by plant cells from the soil?

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

    What happens to water molecules during the process of osmosis in root hairs?

    <p>They move from higher water concentration to lower water concentration</p> Signup and view all the answers

    Which pathway involves water moving along cell walls and intercellular spaces without crossing cell membranes?

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

    What is the role of root hairs in the uptake of water and minerals from the soil?

    <p>They increase the surface area available for absorption</p> Signup and view all the answers

    What is the primary function of sugar transport in plants?

    <p>To distribute sugar throughout the plant</p> Signup and view all the answers

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

    <p>Investigating the Rise of Water in Capillary Tubes</p> Signup and view all the answers

    In which pathway for water movement do cells interconnect through plasmodesmata?

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

    Which of the following best describes the role of the Casparian strip in plant physiology?

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

    What is the primary force driving capillarity in plant physiology?

    <p>Cohesion and adhesion</p> Signup and view all the answers

    How does sugar transport occur in plants?

    <p>Actively loaded into the sieve tubes of the phloem</p> Signup and view all the answers

    What is the primary function of sugar transport in plants?

    <p>To transport nutrients to various parts of the plant</p> Signup and view all the answers

    Which of the following does not contribute to water movement in plants?

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

    What causes water to move into sieve tubes of phloem in plants?

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

    What is translocation in plants?

    <p>The process of transporting water and minerals from the roots to the leaves</p> Signup and view all the answers

    Which of the following is not a mechanism of movement in translocation?

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

    Which of the following is not a practical investigation related to fluid dynamics in plants?

    <p>Investigation of photosynthesis rate</p> Signup and view all the answers

    What is the role of cohesion and adhesion in plant physiology?

    <p>They facilitate the process of capillarity</p> Signup and view all the answers

    What mechanism allows plants to absorb mineral salts against their concentration gradient?

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

    What mechanism is responsible for the active loading of sucrose into the sieve tubes of the phloem in leaves?

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

    Which pathway does water follow after reaching the Casparian strip in the endodermis?

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

    What type of transport is responsible for water movement along the symplast pathway through plasmodesmata?

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

    Which force contributes to the movement of water and minerals from the roots to the leaves through the xylem?

    <p>Cohesive force</p> Signup and view all the answers

    Which statement best describes the function of the Casparian strip in plant physiology?

    <p>It prevents water and dissolved substances from moving along the apoplast pathway</p> Signup and view all the answers

    Which pathway plays a crucial role in allowing water to reach the Casparian strip in the endodermis?

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

    What is the primary force driving water movement in the symplast pathway?

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

    Which mechanism of solute transport in plants is driven by the concentration gradient?

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

    Which process primarily facilitates the absorption of water through root hairs?

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

    Which investigation is used to quantify 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

    What causes water to move from the soil into the root hairs during the process of osmosis?

    <p>Lower water concentration in the root hairs</p> Signup and view all the answers

    What is the role of cohesion and adhesion in the process of capillarity?

    <p>They help water rise through the narrow tubes in the xylem</p> Signup and view all the answers

    Which statement best describes the process of translocation?

    <p>It is the process by which water and minerals are moved from the roots to the leaves</p> Signup and view all the answers

    How does the Casparian strip affect water movement in the root?

    <p>It blocks water movement along the apoplast pathway</p> Signup and view all the answers

    What is the primary function of sugar transport in plants?

    <p>It is essential for plant nutrition and growth</p> Signup and view all the answers

    Which pathway for water movement involves crossing cell membranes and moving through the cytoplasm?

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

    How does active transport enable plants to absorb mineral salts from the soil?

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

    What is the role of root pressure in the movement of water through the xylem?

    <p>It helps push water up through the xylem towards the leaves</p> Signup and view all the answers

    Which statement best describes the function of the phloem in plant physiology?

    <p>It is responsible for the transport of sucrose from the leaves to various parts of the plant</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser