Question

Q2) A) Define:
2) Tissue.​

Answer 1

Answer:

Tissue, in physiology, a level of organization in multicellular organisms; it consists of a group of structurally and functionally similar cells and their intercellular material.

Answer 2

Answer:

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Explanation:

NCERT Textbook Page 63

1. What is a tissue?

Ans. A group of cells that are similar in structure and work together to do a peculiar function is called tissue.

2. What is the utility of tissues in multicellular organisms?

Ans. Tissues provide structural strength, mechanical strength, show division of labour.

NCERT Textbook Page 74

1. Name types of simple tissues.

Ans. The types of simple tissues are parenchyma, collenchyma, sclerenchyma and aerenchyma.

2. Where is apical meristem found?

Ans. Apical meristem is found at the tip of root or shoot of the plant.

3. Which tissue makes up the husk of coconut?

Ans. The husk of coconut is made of sclerenchymatous tissue.

4. What are the constituents of phloem?

Ans. Phloem is made up of four types of elements sieve tube, companion cells, phloem fibres and phloem parenchyma.