MCQ
The thin and continuous wall layer of pollen is
- AExine
- ✓Intine
- CGerm pore
- DEndothecium
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Reason : Distinctive morphological characters are displayed due to reproductive isolation.
$(a)$ Spermatogonia
$(b)$ Secondary spermatocyte
$(c)$ Primary spermatocyte
$(d)$ Spermatid