Cuticular Transpiration.

Q.

The ___ is a waxy layer secreted by the epidermis on the two surfaces of the leaf.

1. lenticel

2. stoma

3. slimy gel

4. cuticle

Q.

Desert plants have thicker cuticles to cut down photosynthesis.

1. False

2. True

Q. The outer surface of the epidermis is covered by a waxy coating called .

1. dermis
2. cuticle
3. guard cells
4. trichome

Q.

What is the primary function of the cuticle?

1. Prevent evaporation from the leaf surface

2. Prevent photosynthesis

3. Prevent the leaf from wilting.

4. None of the above

Q.

Water is lost by plants due to a process called transpiration. Which structure is responsible for it?

1. Stomata

2. Cuticle, the waxy layer

3. Epidermal cells

4. Simple holes on leaves.

Q.

Only _______ percent of the total water absorbed by the plant is used in photosynthesis and other activities.

1. eight

2. two

3. four

4. five

Q.

Transpiration increases by increase in:

1. CO₂

2. O₂

3. Soil dryness

4. Temperature

Q.

What is the primary function of the cuticle?

1. Prevent evaporation from the leaf surface

2. Prevent photosynthesis

3. Prevent the leaf from wilting.

4. None of the above

Q. Consider the phenomenon shown in the given diagram and select the incorrect statement regarding this phenomenon.
(i) Low root pressure is responsible for this phenomenon.
(ii) This happens in plants growing in hot and dry conditions.
(iii) All plants do not show this phenomenon.
(iv) It occurs through stomata.
(v) It occurs when absorption is low and transpiration is high.

1. (i), (ii) and (v) only
2. (iii) only
3. (i), (ii), (iv) and (v)
4. (ii), (iii) and (v) only

Q.

State the significance of cutin in the edidermis of desert plants.

Q. Identify the structure through which cuticular transpiration happens.

1. 
2. 
3. 

Q. Foliar transpiration

1. Includes stomata and cuticular transpiration
2. Shows stomatal transpiration
3. Does not occur
4. Includes all type of transpiration

Q. Gaseous exchange and water loss take place in plants through________

1. Guard cell
2. Stomata
3. Mesophyll
4. Lenticel

Q. Cuticular surfaces are hydrophilic in nature.

1. True
2. False

Q. The greater the thickness of the cuticle, _________ is the transpiration rate.

1. lesser
2. more
3. equal
4. none of these

Q.

Plants lose water through leaves by a process called __ .

Q. What is the purpose of forming ridges and grooves on the skin of our fingers?

1. To provide sensation.
2. To help regulate temperature.
3. To protect from UV rays.
4. To provide efficient grip.

Q. As the thickness of cuticle increases, the rate of transpiration decreases.

1. True
2. False

Q. The loss of water through cuticle reaches upto

1. 5%
2. 20%
3. 10%
4. 40%

Q. Loss of water by transpiration can occur through

1. Stomata
2. Cuticle
3. Lentical
4. All of the above