Quiz Questions On Transpiration In Plants! Trivia

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

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.

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

Increases, close

Decreases, open

Decreases, close

Increases, open

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.

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.

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

Increases, slower

Decreases, faster

Decreases, slower

Increases, faster

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

Explanation

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

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

Reduces transpiration

Helps prevent wilting

Minimizes water loss

Reduces carbon dioxide absorption

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.

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.

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

Faster, quickly

Slower, quickly

Faster, slowly

Slower, slowly

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.

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.

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

Slower, slows down

Slower, speeds up

Faster, slows down

Faster, speeds up

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.

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.

7. Where does the water evaporate in the leaf

At the waxy cuticle

At the surfaces of the mesophyll cells

In the sunlight

At the stomata

Stomata are tiny openings located on the surface of leaves, primarily on the underside in most plants. They regulate gas exchange by opening and closing, allowing water vapor to escape during transpiration and carbon dioxide to enter for photosynthesis. While evaporation does occur at the surfaces of the mesophyll cells, the water vapor primarily exits the leaf through the stomata, making them the critical point for evaporation in the leaf structure.

Explanation

Stomata are tiny openings located on the surface of leaves, primarily on the underside in most plants. They regulate gas exchange by opening and closing, allowing water vapor to escape during transpiration and carbon dioxide to enter for photosynthesis. While evaporation does occur at the surfaces of the mesophyll cells, the water vapor primarily exits the leaf through the stomata, making them the critical point for evaporation in the leaf structure.

8. Why do plants transpire anyway?

Enhances mineral uptake

Allows carbon dioxide to enter for photosynthesis

Keeps leaves cool

Allows it to suck up more water from roots

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.

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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