Arrange the given layers of a microsporangium in the correct order from outside to inside.
(A) Epidermis
(B) Tapetum
(C) Middle layers
(D) Endothecium
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A), (D), (C), (B)
(A) Epidermis — first, the outermost layer. It covers and protects the microsporangium.
(D) Endothecium — second, just below the epidermis. Along with the epidermis and middle layers, it protects the microsporangium and helps the anther to open and release the pollen.
(C) Middle layers — third. These layers lie between the endothecium and the tapetum and also do the work of protection.
(B) Tapetum — last, the innermost wall layer. Its cells are dense and often have more than one nucleus. It nourishes the developing pollen grains, so it lies closest to them.
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NCERT Extract:
Stamen, Microsporangium and Pollen Grain – …
