Collenchyma

Q.

Describe the structure of collenchyma tissue.

Q. Which of the following tissues has dead cells?

1. Parenchyma
2. Collenchyma
3. Epithelial tissue
4. Sclerenchyma

Q.

Where do you find collenchyma tissues in plants?

Q.

Why the cell walls of collenchyma tissues are unevenly thickened?

Q.

Which chemical is deposited at the corner of cells in collenchyma ?

Q.

_________is the tissue responsible for the flexibility in the plants.

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

Q.

Cells of collenchyma are thickened with pectin, while cells of schlerenchyma are thickened with lignin.

1. True

2. False

Q.

__________ plant tissue allows easy bending of the plant near the leaves and branches without breaking.

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

Q. The cells of 'X' are living, elongated and irregularly thickened at the corners. What does 'X' represents here?

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

Q.

Which of the following is not a plant tissue?

1. Parenchyma

2. Collenchyma

3. Epithelial

4. Sclerenchyma

Q.

Give one main function of collenchyma ?

Q.

Give any two collenchyma tissue functions.

Q.

The sclerenchymatous cells have irregularly thickened cell walls.

1. True
2. False

Q.

Collenchyma differs from sclerenchyma in

1. Having suberin cell walls and protoplasm

2. Having lignin cell walls and protoplasm

3. Not having protoplasm and pectin cell walls

4. Having pectin cell walls and protoplasm

Q.

What are the identifying features of collenchyma tissues?

Q.

A simple mechanical tissue devoid of lignin is:

1. Parenchyma

2. Sclerenchyma

3. Collenchyma

4. Chlorenchyma

Q. What is the structure of collenchyma?

1. Have thin walls and short cells when compared with that of parenchyma
2. Have thick walls and short cells when compared with that of parenchyma
3. Have thin walls and elongated cells when compared with that of parenchyma.
4. Thick walls and elongated cells when compared with that of parenchyma

Q.

Question 4
Differentiate between parenchyma, collenchyma, and sclerenchyma, on the basis of their cell wall.

Q. The cork acts as a protective tissue and protects plants from __________.

1. mechanical injury
2. temperature extremes
3. loss of water
4. withering

Q. Difference between sclerenchyma and parenchyma tissue

Q.

Lenticels can open and close.

1. True
2. False

Q.

What is the shape of parenchyma cells?

Q. What are permanent tissues? Describe the different types of simple permanent tissues.

[Review question: Pg. No: 224]

Q.

Cells of parenchyma tissue are __ in shape.

Q.

Cells of tissue A have small intercellular spaces and walls thickened at the corners. Cells of tissue B do not have intercellular spaces and thickened cell walls. Identify tissue A and B.

1. A: Chlorenchyma, B: Sclerenchyma

2. A: Collenchyma, B: Chlorenchyma

3. A: Collenchyma, B: Sclerenchyma

4. A: Sclerenchyma, B: Collenchyma

Q.

Differentiate parenchyma, collenchyma, and sclerenchyma based on (a) cell wall, (b) strength, and (c) cytoplasm.

Q.

State the function of collenchyma?

Q.

The husk of the coconut is made up of ?

1. Collenchyma

2. Sclerenchyma

3. Apical meristem

4. Intercalary meristem

Q. Find out the incorrect sentence/sentences.
a. Collenchyma cells are dead and elongated.
b. Collenchyma tissue provides flexibility.
c. Collenchyma tissue possesses large intercellular space.
d. Collenchyma tissue is irregularly thickened at corner.

Q.

Define permanent tissues.