Parenchyma

Q.

Differentiate between sclerenchyma and parenchyma tissues. Draw a well-labeled diagram.

Q. Which of the following occurs in layers below the epidermis in dicotyledonous plants?

1. Parenchyma
2. Sclerenchyma
3. Collenchyma
4. Aerenchyma

Q.

More transpiration occurs from the under surface of the dicot leaves

Q. The outermost and innermost wall layers of microsporangium in an anther are respectively

1. Epidermis and endodermis
2. Epidermis and middle layer
3. Endothecium and tapetum
4. Epidermis and tapetum

Q. What type of tissues are more abundant in plants?

Q.

Why are cells of collenchyma thick towards the corners?

Q. Innermost microsporangial wall layer that nourishes pollen
grain is

1. Endothecium
   
2. Sporogenous tissue
   
3. Tapetum
   
4. Endodermis
   

Q.

How many types of cells is a simple tissue made up of?

Q. Arrangement of four wall layers in microsporangium
from inside to outside is as follows:

1. Epidermis, middle layers, endothecium and tapetum
2. Tapetum, middle layers, endothecium and epidermis
3. Epidermis, endothecium, tapetum and middle layers
4. Epidermis, endothecium, middle layers and tapetum

Q.

Which one of the following tissues does not possess living protoplasm?

1. Collenchyma

2. Sclerenchyma

3. Tracheids

4. Both (B) and (C)

Q. Do different species of plants growing in the same area show the same rate of transpiration at a particular time? Justify your answer

Q. Give the location of the casparian strip and explain its role in the water movement.

Q. Differentiate between dedifferentiation and redifferentiation.

Q. A vesselless piece of stem possessing prominent sieve tubes would belong to

1. Grass
2. Trochodendron
3. Pinus
4. Eucalyptus

Q. Ruminate endosperm occurs in

1. Compositae
2. Annonaceae/Areca Nut
3. Cruciferae
4. Euphorbiaceae

Q.

Difference between collenchymas and sclerenchyma.

Q.

Collenchyma is considered a living tissue because

1. It has cell walls

2. It has cellulose in its cell walls

3. It has protoplasm

4. It has angular thickenings

Q.

Name the tissue through which ascent of sap occurs.

Q.

What is the function of tissue present in the bark of a tree?

Q.

Cuticles and bark of leaves prevent transpiration.

Q.

Collenchyma is :

1. Living and contains protoplasm

2. Dead and hollow

3. Dead and filled with reserve food

4. Living and contains no reserve food

Q.

The stalk of a leaf is derived from which one of the following types of plant tissue?

1. Sclerenchyma

2. Parenchyma

3. Chlorenchyma

4. Collenchyma

Q.

Which of the following is modified to form air cavities in aquatic plants?

1. Sclerenchyma

2. Aerenchyma

3. Collenchyma

4. None of the above

Q.

Name the zone of parenchyma which is present at the center of the sunflower stem.

Q.

Which type of simple tissues of plants are used for making ropes ?

Q. Which tissue is found in pith and cortex of stem and roots?

1. Sclerenchyma
2. Parenchyma
3. Collenchyma
4. None of the above

Q.

Differentiate between parenchyma and collenchyma.

Q. (a) How is dermal tissue adapted to prevent excessive transpiration in plants?
(b) Why do leaves of lotus plant float on water?

Q. Oval, spherical or polygonal cells, thickening at corners due to deposition of cellulose, hemicellulose and pectin-often containing chloroplasts and having or not having intercellular spaces are called

1. Chlorenchyma
2. Parenchyma
3. Collenchyma.
4. Sclerenchyma

Q. Chloroplast containing parenchyma is called ___ tissue.

1. Sclerenchyma
2. Chlorenchyma
3. Arenchyma
4. Collenchyma