Question

The histogen layer present at the apex of root tip is
(a) dermatogen (b) calyptrogen
(c) periblema (d) plerome

Answer 1

Answer:

(a) hdhdhdhdhduxhejeihshdgdgeve

Answer 2

Histogen layer present at the apex of root tip:

• Option “B” is correct i.e. Calyptrogen.

• The histogen layer present at the apex of root tip is called calyptrogen.

• Rendering to histogen theory by Hanstein, the three main tissues of the root, vascular cylinder, cortex and epidermis initiate from three groups of initial cells or histogens, in the apical meristem plerome, periblem and dermatogen correspondingly. A fourth histogen, the calyptrogen yields the root cap.

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