Arrange the following layers of microsporangium in correct sequence starting from inside to outside.
(A) Epidermis
(B) Tapetum
(C) Middle layers
(D) Endothecium
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (B), (C), (D), (A)
(B) Tapetum — this is the innermost wall layer, so it comes first. It has dense cytoplasm and often more than one nucleus. It nourishes the developing pollen grains.
(C) Middle layers — these lie just outside the tapetum, so they come second.
(D) Endothecium — this lies outside the middle layers, so it comes third.
(A) Epidermis — this is the outermost layer, so it comes last. Along with the endothecium and the middle layers, it protects the pollen sac and helps the anther to open (dehisce) and release the pollen.
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NCERT Extract:
Stamen, Microsporangium and Pollen Grain – …
