GCE O-Level · Biology (6093)

Transpiration: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Transpiration.

10 questions19 marksFree, no account

Question 1

1 mark

Which environmental condition would most likely decrease the rate of transpiration in a flowering plant?

Question 2

1 mark

Why does a plant wilt during a hot, dry day?

Question 3

1 mark

Which of the following is the best definition of transpiration?

Question 4

1 mark

What is the primary factor that drives the movement of water between plant cells and from the roots to the environment?

Question 5

1 mark

In which tissue is water transported from the roots to the leaves by transpiration pull?

Question 6

2 marks

Outline the pathway by which water is transported from the soil into the xylem vessels of the roots.

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Question 7

3 marks

Explain how wilting occurs in a plant when the rate of transpiration exceeds the rate of water absorption by the roots.

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Question 8

3 marks

Define the term transpiration and explain why it is considered an inevitable consequence of gaseous exchange in plants.

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Question 9

3 marks

Transpiration is often described as a 'consequence of gaseous exchange'.
(a) Define the term transpiration.
(b) Explain why a plant must lose water vapor when it opens its stomata to take in carbon dioxide for photosynthesis.

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Question 10

3 marks

The rate of transpiration is influenced by environmental factors.
State how an increase in the following factors affects the rate of transpiration:
(i) Air movement (wind)
(ii) Humidity
(iii) Light intensity

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