Explain histogen theory. – InterviewSolution

1.

Explain histogen theory.

Answer»

Histogen theory is proposed by Hanstein (1868) and supported by Strassburgur.

The shoot apex comprises three distinct zones.

1. Dermatogen: It is a outermost layer. It gives rise to epidermis.

2. Periblem: It is a middle layer. It gives rise to cortex.

3. Plerome: It is innermost layer. It gives rise to stele.

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