Arrange the following layers of microsporangium wall in the correct sequence starting from inside to outside.
A. Middle layers
B. Endothecium
C. Epidermis
D. Tapetum
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → D, A, B, C
D. Tapetum — this comes first. It is the innermost of the four wall layers of the microsporangium. It nourishes the developing pollen grains.
A. Middle layers — this comes second. They lie just outside the tapetum.
B. Endothecium — this comes third. It lies outside the middle layers.
C. Epidermis — this comes last. It is the outermost layer. The outer three wall layers protect the anther and help it to open and release the pollen.
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NCERT Extract:
Stamen, Microsporangium and Pollen Grain – …
