Question

Give reasons for
(a) Meristematic cells have a prominent nucleus cytoplasm but they lack vacuoles
(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.

Answer 1

(a) They are undergoing divisons (by mitosis) 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) Sclerenchyma fibres are tightly packed.