Significance of Transpiration.

Q. Question 7
Does transpiration serve any useful function in the plants? Explain.

Q.

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Please help me with the following

What is suction force in plants and how does transpiration help to produce it?

Q. Ascent of sap meaning and work it do

Q. List any 4 advantages of transpiration to the plant. [4 MARKS]

Q.

A ___ force created by transpiration leads to the ascent of sap.

1. pushing

2. gravitational

3. suction

4. external

Q. Transpiration helps in

1. pulling water from roots to the leaf
2. transportation of food
3. cooling down the plant
4. formation of fruits

Q. Give suitable explanations for the following: [5 MARKS]
(a) A higher rate of transpiration is recorded on a windy day rather than on a calm day
(b) Excessive transpiration results in the wilting of the leaves.
(c) Water transpired is the water absorbed.
(d) More transpiration occurs from the lower surface of a dorsiventral leaf.
(e) Cork and bark of trees help in preventing loss of water.

Q.

It is a surprising fact that plants don't need a blood like fluid to transport food and water. Trees use a straw like mechanism to pull water up the tips of trees. This pull of water in trees is created by a phenomenon known as______.

1. Nutrition

2. Perspiration

3. Digestion

4. Transpiration

Q. Differentiate between Guttation and bleeding.

Q.

Transpiration has great significance for the plant like_______.

1. all of these

2. creating suction force

3. distributing water

4. cooling

Q. Suppose you have a small rose plant growing in a pot. How would you demonstrate transpiration in it?
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Q.
During transpiration, the leaves lose more water from their upper surface.

1. true
2. false

Q.

Which of the following changes in the atmosphere are due to the process of transpiration?

1. Increased moisture in the atmosphere

2. Causes more rainfall

3. Increased velocity of air

4. Increased $C{O}_2$ level in the atmosphere

Q. Transpiration is an endothermic process.

1. True
2. False

Q.

Which of the following is not a purpose of transpiration?

1. Supplies water for photosynthesis.

2. Transports minerals from the soil to all parts of the plant.

3. Helps in translocation of sugars from source to sink.

4. Cools leaf surface.

Q.

Passive absorption of water by the root system is the result of

1. Increased respiratory activity in root cells

2. Forces created in the cells of the root

3. Tension on the cell sap due to transpiration

4. Osmotic force in the shoot system

Q. Transpiration acts as a suctional force to pull water from the to the .

1. leaf
2. root
3. bark
4. fruit

Q. The shade of the tree is often cooler than exposed atmosphere, because of

1. Photosynthesis
2. Guttation
3. Respiration
4. Transpiration

Q.

Transpiration is very essential for plants as it

1. exchange gases

2. cools

3. removes mineral

4. exchange mineral

Q.

Root pressure is enough to transport water in small trees and bushes.

1. True

2. False

Q.

Transpiration is necessary because:

1. It helps the plants to survive on hot sunny days

2. It creates suction force for transport of water

3. Both A and B

4. None of these

Q.

Name the following

The loss of water from the aerial parts of the plant in the form of vapors.