Quiz Questions On Transpiration In Plants! Trivia

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Quizzes Created: 7 | Total Attempts: 8,398

Questions: 8 | Attempts: 6,580 | Updated: Mar 22, 2023

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Questions and Answers

1.

What does the shiny waxy cuticle at the top of the leaf do?
- A.
  
  Reduces transpiration
- B.
  
  Helps prevent wilting
- C.
  
  Minimizes water loss
- D.
  
  Reduces carbon dioxide absorption
Correct Answer
C. Minimizes water loss

Explanation
The shiny waxy cuticle on the top of the leaf acts as a barrier, preventing excessive water loss through evaporation. It helps to reduce transpiration, the process by which water is lost from the leaf surface. By minimizing water loss, the cuticle helps to prevent wilting and ensures that the leaf remains hydrated. Additionally, the cuticle does not have a direct impact on carbon dioxide absorption, as this process primarily occurs through the stomata on the underside of the leaf.

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2.

Where does the water evaporate in the leaf
- A.
  
  At the waxy cuticle
- B.
  
  At the surfaces of the mesophyll cells
- C.
  
  In the sunlight
- D.
  
  At the stomata
Correct Answer
B. At the surfaces of the mesophyll cells

Explanation
Water evaporates at the surfaces of the mesophyll cells in the leaf. Mesophyll cells are located in the middle layer of the leaf and contain chloroplasts for photosynthesis. These cells have a large surface area due to their numerous projections called cell processes. This increased surface area allows for more water to be exposed to the air, facilitating evaporation. Additionally, the mesophyll cells are in close proximity to the stomata, which are small openings on the leaf surface through which water vapor can escape.

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3.

Water vapor diffuses through the leaf and exits the plant through the ______

Correct Answer
stomata
stoma

Explanation
Water vapor diffuses through the leaf and exits the plant through the stomata, which are small openings on the surface of leaves. These stomata allow for the exchange of gases, including the release of water vapor during transpiration. The singular form of stomata is stoma.

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4.

Why do plants transpire anyway?
- A.
  
  Enhances mineral uptake
- B.
  
  Allows carbon dioxide to enter for photosynthesis
- C.
  
  Keeps leaves cool
- D.
  
  Allows it to suck up more water from roots
Correct Answer(s)
A. Enhances mineral uptake
B. Allows carbon dioxide to enter for photosynthesis
C. Keeps leaves cool
D. Allows it to suck up more water from roots

Explanation
Plants transpire to enhance mineral uptake, allow carbon dioxide to enter for photosynthesis, keep leaves cool, and allow them to suck up more water from the roots. Transpiration helps in the movement of water and nutrients from the roots to the rest of the plant. It also facilitates the exchange of gases, allowing carbon dioxide to enter the leaves for photosynthesis. Transpiration also helps in cooling the leaves, preventing overheating and damage. Additionally, transpiration creates a suction force that helps in the absorption of water and minerals from the roots.

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5.

As light intensity increases, the transpiration rate ________. The stomata _____ to allow more carbon dioxide into the leaf for photosynthesis.
- A.
  
  Increases, close
- B.
  
  Decreases, open
- C.
  
  Decreases, close
- D.
  
  Increases, open
Correct Answer
D. Increases, open

Explanation
As light intensity increases, the transpiration rate increases. This is because light stimulates the opening of stomata, which allows for more water vapor to escape from the leaf through transpiration. Additionally, the increase in light intensity also triggers an increase in photosynthesis, which requires more carbon dioxide. To facilitate this, the stomata open wider to allow more carbon dioxide into the leaf for photosynthesis.

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6.

As temperature increases, transpiration speed ________. Evaporation and diffusion are _______ at higher temperatures.
- A.
  
  Increases, slower
- B.
  
  Decreases, faster
- C.
  
  Decreases, slower
- D.
  
  Increases, faster
Correct Answer
D. Increases, faster

Explanation
As temperature increases, transpiration speed increases. This is because higher temperatures increase the rate of evaporation and diffusion, leading to faster transpiration.

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7.

Transpiration is _______ in windy conditions. Water vapor is removed ______ by air movement speeding up diffusion of more water vapor out of the leaf.
- A.
  
  Faster, quickly
- B.
  
  Slower, quickly
- C.
  
  Faster, slowly
- D.
  
  Slower, slowly
Correct Answer
A. Faster, quickly

Explanation
In windy conditions, transpiration is faster because the air movement speeds up the diffusion of water vapor out of the leaf. The wind helps to carry away the water vapor quickly, leading to a higher rate of transpiration.

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8.

Transpiration is _______ in humid conditions. Diffusion of water vapor out of leaf ____ ____ if the leaf is already surrounded by moist air.
- A.
  
  Slower, slows down
- B.
  
  Slower, speeds up
- C.
  
  Faster, slows down
- D.
  
  Faster, speeds up
Correct Answer
A. Slower, slows down

Explanation
In humid conditions, the air is already saturated with moisture, which means there is a high concentration of water vapor in the air. As a result, the rate of diffusion of water vapor out of the leaf slows down because there is less of a concentration gradient between the leaf and the surrounding air. This causes transpiration, the process by which water evaporates from the leaves, to be slower.

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Current Version
Mar 22, 2023

Quiz Edited by
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Feb 18, 2016

Quiz Created by
Proanimator

Quiz Questions On Transpiration In Plants! Trivia

What does the shiny waxy cuticle at the top of the leaf do?

Where does the water evaporate in the leaf

Water vapor diffuses through the leaf and exits the plant through the ______

Why do plants transpire anyway?

As light intensity increases, the transpiration rate ____. The stomata _ to allow more carbon dioxide into the leaf for photosynthesis.

As temperature increases, transpiration speed __. Evaporation and diffusion are _ at higher temperatures.

Transpiration is _ in windy conditions. Water vapor is removed by air movement speeding up diffusion of more water vapor out of the leaf.

Transpiration is ___ in humid conditions. Diffusion of water vapor out of leaf if the leaf is already surrounded by moist air.

Quiz Questions On Transpiration In Plants! Trivia

What does the shiny waxy cuticle at the top of the leaf do?

Where does the water evaporate in the leaf

Water vapor diffuses through the leaf and exits the plant through the ______

Why do plants transpire anyway?

As light intensity increases, the transpiration rate ________. The stomata _____ to allow more carbon dioxide into the leaf for photosynthesis.

As temperature increases, transpiration speed ________. Evaporation and diffusion are _______ at higher temperatures.

Transpiration is _______ in windy conditions. Water vapor is removed ______ by air movement speeding up diffusion of more water vapor out of the leaf.

Transpiration is _______ in humid conditions. Diffusion of water vapor out of leaf ____ ____ if the leaf is already surrounded by moist air.

As light intensity increases, the transpiration rate ____. The stomata _ to allow more carbon dioxide into the leaf for photosynthesis.

As temperature increases, transpiration speed __. Evaporation and diffusion are _ at higher temperatures.

Transpiration is _ in windy conditions. Water vapor is removed by air movement speeding up diffusion of more water vapor out of the leaf.

Transpiration is ___ in humid conditions. Diffusion of water vapor out of leaf if the leaf is already surrounded by moist air.