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6.Anatomy of Flowering Plants
medium
Dermatogen, periblem and plerome are
A
Permanent tissues
B
Meristematic tissues
C
Intercalary tissues
D
Secondary tissues
Solution
(b) 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.
Standard 11
Biology
