Plant Biology: Tissue Functions and Structures

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Questions and Answers

What is the main function of dermal tissue in plant leaves?

Store energy for growth

Conduct photosynthesis

Transport nutrients throughout the plant

Facilitate gas exchange and protect from water loss (correct)

Which of the following best describes phototropism?

Random growth patterns in response to environmental factors

Directional growth of plants towards sunlight (correct)

Plants growing away from light sources

Growth of plants towards gravity

What role does the vascular tissue play in plant stems?

Provides structural support

Absorbs water and minerals from soil

Facilitates photosynthesis

Transports nutrients and stores energy (correct)

What is gravitropism in plants?

Directional growth in response to gravity Signup and view all the answers

Which of the following statements about ground tissue is true?

It serves functions in photosynthesis and storage. Signup and view all the answers

What is the primary function of the palisade mesophyll in a leaf?

Facilitating photosynthesis Signup and view all the answers

Which layer of the leaf is responsible for preventing water loss?

Cuticle Signup and view all the answers

How do guard cells affect gas exchange in a leaf?

They regulate the opening and closing of stomata Signup and view all the answers

Which tissue is primarily involved in transporting sugars throughout the plant?

Phloem Signup and view all the answers

What role do intercellular air spaces play in the leaf structure?

They provide pathways for gas exchange Signup and view all the answers

What is the primary function of the shoot system's leaves in plants?

Carry out photosynthesis Signup and view all the answers

Which level of organization is directly composed of similar cells performing a specific task?

Tissues Signup and view all the answers

Which organ is part of the circulatory system in plants?

Stems Signup and view all the answers

What does the root system primarily help plants to do?

Absorb water and minerals Signup and view all the answers

Which option correctly identifies the relationship between organ systems and organisms?

Organisms consist of organ systems working together Signup and view all the answers

What primary process enables water to be drawn up through the xylem in plants?

Transpiration pull Signup and view all the answers

Which factor does NOT contribute to the movement of water through the xylem?

Active transport Signup and view all the answers

How far can water be drawn up the xylem vessels to the leaves in some plants?

100 meters Signup and view all the answers

Which process describes the loss of water through stomata in plants?

Transpiration Signup and view all the answers

What is the role of cohesion in the movement of water in plants?

To cause water molecules to stick together Signup and view all the answers

What defines cohesion in the context of water molecules?

Attraction of water molecules to each other Signup and view all the answers

Which statement accurately describes root pressure?

It is an upward force from the roots that helps move water through the xylem. Signup and view all the answers

What causes water to enter root hairs?

High concentration of solutes inside the root cells Signup and view all the answers

What role do xylem cell walls play in the movement of water in plants?

They aid in the adhesion of water molecules. Signup and view all the answers

How is root pressure generated in plants?

From the active transport of minerals and subsequent osmosis of water. Signup and view all the answers

What happens to guard cells when they take in potassium ions ($K^+$)?

They become turgid and the stomata open. Signup and view all the answers

Which process primarily drives gas exchange in plants?

Diffusion of gases. Signup and view all the answers

What occurs in guard cells during nighttime?

Potassium ions ($K^+$) exit, leading to the deflation of guard cells. Signup and view all the answers

What role do guard cells play in gas exchange?

They open and close stomata to regulate gas exchange. Signup and view all the answers

What happens to guard cells when light strikes them?

They accumulate potassium ions and swell. Signup and view all the answers

What is the primary function of the cuticle in plant leaves and stems?

Prevents water loss Signup and view all the answers

Which statement accurately describes the composition of ground tissue?

It makes up most of the plant structure. Signup and view all the answers

What distinguishes xylem from phloem in vascular tissue?

Xylem moves water and minerals upward; phloem moves sugars downward. Signup and view all the answers

Which function does ground tissue NOT perform?

Gas exchange Signup and view all the answers

What describes the dermal tissue in herbaceous plants?

It protects against diseases and prevents water loss. Signup and view all the answers

What is a key reason multicellular organisms develop specialized cells and tissues?

To perform functions more efficiently Signup and view all the answers

Which of the following best illustrates the concept of cell specialization in multicellular organisms?

Different types of muscle tissue performing various movements Signup and view all the answers

How does specialization enhance the survival and reproduction of multicellular organisms?

By distributing responsibilities based on strengths Signup and view all the answers

Which example demonstrates the role of specialization in a multicellular organism?

Cells of the small intestine absorbing nutrients Signup and view all the answers

In what way does specialization in cells improve their functionality?

By enabling them to focus on a particular role more effectively Signup and view all the answers

What is the primary gas that enters a plant leaf through the stomata?

Carbon Dioxide Signup and view all the answers

What do lenticels primarily function as in plants?

Natural openings for gas exchange Signup and view all the answers

Which gas is produced during photosynthesis and released into the atmosphere?

Oxygen Signup and view all the answers

What type of gas exchange occurs primarily through small openings on the stems of plants?

Lenticel Exchange Signup and view all the answers

What role do intercellular spaces play during gas exchange in leaves?

Facilitating diffusion of gases within the leaf Signup and view all the answers

What distinguishes meristem tissue in plants from other types of tissues?

It consists of self-renewing stem cells. Signup and view all the answers

Which statement accurately describes the function of guard cells?

They regulate the opening and closing of stomata. Signup and view all the answers

What is the primary role of xylem in plants?

To transport water and dissolved minerals. Signup and view all the answers

How do root hairs enhance a plant's ability to absorb resources?

They increase the surface area for absorption. Signup and view all the answers

Which of the following accurately describes chloroplasts in plant cells?

They are the primary site of photosynthesis. Signup and view all the answers

Study Notes

Phototropism

Phototropism is the directional plant growth in response to sunlight
Plants grow towards sunlight

Gravitropism

Gravitropism is the directional plant growth in response to gravity
Plants know which way is up

Function of Tissues

Organ	Dermal (epidermal)	Ground	Vascular
Leaf	Gas exchange Protection from water loss and disease	Photosynthesis Support Storage	Transport Storage
Stem	Gas exchange Protection from water loss and disease Absorption of water and minerals from soil	Support Storage	Transport Storage

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Description

This quiz explores the functions of various plant tissues including dermal, vascular, and ground tissues. Questions cover topics such as phototropism, gravitropism, and the roles of different leaf structures in plant physiology. Test your knowledge on how these tissues contribute to the overall function of plants.