Structural Organisation In Animals Question 204
Question: Dermatogen, periblem and plerome are [AMU 1986]
Options:
A) Permanent tissues
B) Meristematic tissues
C) Intercalary tissues
D) Secondary tissues
Show Answer
Answer:
Correct Answer: B
Solution:
According to histogen theory of Hanstein (1870), the shoot apex is differentiated in to three distinct meristematic zones or layers [a] Dermatogen (forms epidermis) [b] Periblem (forms cortex and endodermis) and [c] Plerome (forms pericycle) vascular bundles, medullary rays and pith.
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