Arrange the given layers of microsporangium starting from inside to outside in correct sequence.
(A) Middle layers
(B) Tapetum
(C) Epidermis
(D) Endothecium
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (B), (A), (D), (C)
(B) Tapetum — comes first. It is the innermost wall layer, next to the sporogenous tissue. Its cells have dense cytoplasm and often more than one nucleus, and it nourishes the developing pollen grains.
(A) Middle layers — comes second. They lie just outside the tapetum, and they help to protect the microsporangium.
(D) Endothecium — comes third. It lies outside the middle layers. It protects the microsporangium and helps the anther to open (dehisce) and release the pollen.
(C) Epidermis — comes last. This is the outermost layer, which covers the whole microsporangium.
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NCERT Extract:
Stamen, Microsporangium and Pollen Grain – …
