Factors Affecting Transpiration

Study the diagram given below and answer the questions that follow:
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What do we observe with regard to the level of water when this set-up is placed in windy day.

Study the diagram given below and answer the question that follow:
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What do we observe with regard to the level of water when this set-up is placed in humid conditions.

Study the diagram given below and answer the question that follows:
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What do we observe with regard to the level of water when this set-up is placed in bright sunlight.

Account for the following:

The leaves of certain plants droop on a bright sunny day.

Explain how the rate of transpiration is affected on a foggy day.

Explain how the rate of transpiration is affected on a windy day.

Plants A, B, and C are kept in a beaker containing water and covered with a layer of oil.

Leaves are removed from plant B.
Plant C is exposed to bright sunlight.

Why is the water covered with oil?

Plants A, B, and C are kept in a beaker containing water and covered with a layer of oil.
Leaves are removed from plant B.
Plant C is exposed to bright sunlight.
Name the process responsible for it.

Plants A, B, and C are kept in a beaker containing water and covered with a layer of oil.
Leaves are removed from plant B.
Plant C is exposed to bright sunlight.

In which plant will the water level will move down slowest?

Plants A, B, and C are kept in a beaker containing water and covered with a layer of oil.
Leaves are removed from plant B.
Plant C is exposed to bright sunlight.

In which plant will the level of water move down fastest?

In this experiment:

• The first leaf (a) is coated with vaseline on both surfaces.
• The second leaf (b) is coated with vaseline on the lower surface.
• The third leaf (c) is coated with vaseline on the upper surface.
• The fourth leaf (d) is left without the application of vaseline.

Among the leaves 'b' and 'c' which will dry first?

In this experiment:

• The first leaf (a) is coated with vaseline on both surfaces.
• The second leaf (b) is coated with vaseline on the lower surface.
• The third leaf (c) is coated with vaseline on the upper surface.
• The fourth leaf (d) is left without the application of vaseline.

Which of the leaves will dry last? Why?

In this experiment :

• The first leaf (a) is coated with vaseline on both the surfaces.
• The second leaf (b) is coated with vaseline on the lower surface.
• The third leaf (c) is coated with vaseline on the upper surface.
• The fourth leaf (d) is left without application of vaseline.

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Which of the leaves will dry first? Why?

High wind velocity increases transpiration.

Name 3 important factors that increase transpiration.

List 2 factors that increase the rate of transpiration.