Collenchyma

Q.

Collenchyma is seen only in herbaceous dicots. Why?

1. Because collenchyma cells are not formed in monocots due to absence of lignin

2. Because woody dicots have sclerenchyma tissues to provide mechanical support

3. Because monocots grow as small herbs and don't need much mechanical support

4. Herbaceous dicots need collenchyma cells for photosynthesis

Q.

Collenchyma cells contain thick cell walls and provide support and structure.

1. True

2. False

Q.

Collenchyma generally forms ___________.

1. Epidermis

2. Hypodermis

3. Inner cortex

4. Phloem

Q.

Which of the following statements are true?

1. The collenchyma occurs in layers below the epidermis in monocotyledonoos plants

2. Xylem parenchyma cells are living and thin walled and their cell walls are made up of lignin

3. Sclerenchyma cells are usually dead and without protoplasts

4. The companion cells are specialised sclerenchymatous cells

5. Phloem fibres are generally present in the primary phloem

Q.

Living simple mechanical tissue of plants is

1. bast

2. collenchyma

3. sclerenchyma

4. parenchyma

Q. Chlorenchyma found in:

1. Cytoplasm of Chlorella
2. Mycelium of a green mould such as Aspergillus
3. Spore capsule of a moss
4. Pollen tube of Pinus

Q. The simple tissue consisting of living cells and providing mechanical strength to plants is

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

Q. Which is living mechanical tissue?

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

Q.

A simple mechanical tissue devoid of lignin is:

1. Parenchyma

2. Sclerenchyma

3. Collenchyma

4. Chlorenchyma

Q. Which among the following is/are the component(s) of the cell wall of a typical collenchyma cell?

1. Starch
2. Cellulose
3. Pectin
4. Lignin