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Plant Vascular Tissues and Leaf Functions

18 Questions

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Plant Vascular Tissues and Leaf Functions

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Questions and Answers

What is the main function of xylem in a leaf?

Absorbing light energy for photosynthesis

Transporting water into the leaf for photosynthesis (correct)

Transporting sucrose and amino acids around the plant

Allowing carbon dioxide to diffuse into the leaf

Which leaf adaptation increases the surface area for the diffusion of carbon dioxide and absorption of light for photosynthesis?

Network of veins

Spongy layer with air spaces

Epidermis thin and transparent

Large surface area (correct)

What is the role of chlorophyll in photosynthesis?

Producing carbohydrates

Releasing oxygen into the atmosphere

Transporting water into the leaf

Absorbing light energy (correct)

How does the spongy layer in a leaf contribute to photosynthesis?

Allows carbon dioxide diffusion through the leaf Signup and view all the answers

What is the function of stomata in a leaf?

Allowing carbon dioxide to diffuse into the leaf Signup and view all the answers

Why is the palisade cell layer located at the top of the leaf?

To allow more light to reach palisade cells Signup and view all the answers

Where does the diffusion of carbon dioxide start in photosynthesising cells?

Atmosphere Signup and view all the answers

Which part of the leaf has a protective layer on top to prevent water evaporation?

Upper epidermis Signup and view all the answers

What is the main role of guard cells in the lower epidermis of the leaf?

Absorb and lose water to regulate stomatal opening Signup and view all the answers

Which leaf structure contains tightly packed chloroplasts to maximize photosynthesis?

Palisade mesophyll layer Signup and view all the answers

What is the role of the spongy mesophyll in the leaf?

Increase surface area for gas diffusion Signup and view all the answers

During which time of day do stomata usually open for gas exchange in leaves?

Morning Signup and view all the answers

What is the conclusion drawn from tube A in the gas exchange experiment?

There is a net intake of oxygen by a leaf in light Signup and view all the answers

Which tube serves as the control in the gas exchange experiment?

Tube C with no leaf in light Signup and view all the answers

What does the dark yellow indicator in tube B indicate during the gas exchange experiment?

There is a net intake of carbon dioxide by a leaf in the dark Signup and view all the answers

In the context of the experiment, what does the light red indicator in tube C represent?

There is no gas exchange happening with a leaf in light Signup and view all the answers

What color would you expect the indicator to turn if there was no gas exchange happening with a leaf in light?

Light red Signup and view all the answers

If a tube contains a leaf and has a green indicator, what can be concluded?

The leaf is photosynthesizing effectively Signup and view all the answers