Give reasons for

Question:

Give reasons for

(a) Meristematic cells have a prominent nucleus and dense cytoplasm but they lack vacuole.

(b) Intercellular spaces are absent in sclerencymatous tissue.

(c) We get a crunchy and granular feeling when we chew pear fruit.

(d) Branches of a tree move and bend freely in high wind velocity.

(e) It is difficult to pull out the husk of coconut.

Solution:

(a) They are undergoing divisions and do not store food.

(b) They have lignified walls and form bundles for mechanical function.

(c) It has stone cells or sclereids.

(d) Collenchyma provides them flexibility.

(e) Sderenchyma fibres are closely packed.

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