Question

13,15 it is urgent and answer it quickly
correct answer will be marked as brainliest and I will follow him /her​

Answer 1

Answer:

Explanation:

13} 'Cartilage' is the tissue which smoothens bone surfaces at joints.

It is an elastic tissue which smoothens and protects the joints. It is present at the end of bones, rib cage, nose and ear.

15 } a .The simple permanent tissue which forms the basic packing tissue and provide flexibility in plants is the ** parenchyma tissue **.

°° They are made up of living cells with thin cell walls .

°° The cells can divide.

°° The cells have intercellular spaces between them.

°° The cells do not have a specialised structure.

15 } a. Collenchyma is the permanent tissue responsible for flexibility in plants.

The flexibility to the plants is provided by the mechanical tissue named collenchyma which is formed by deposition of extra cellulose.