First slide

Pre-fertilisation : Structures and Events

Question

Arrange the following layers of microsporangium according to their presence from inside to outside.
(A) Endothecium
(B) Middle layer
(C) Tapetum
(D) Epidermis

Easy

A

A, B, C, D
B

B, A, C, D
C

D, C, B, A
D

C, B, A, D

Solution

Anther is surrounded by four walls and their sequence from outside to inside is:
Epidermis → Endothecium → Middle layer → Tapetum

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