MCQ
There is more competition for survival between
- ✓Same animals of same niche
- BDifferent animals of same niche
- CSame animals of different niche
- DDifferent animals of different niche
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$R$ - The lower the $BOD$ of water, lower is its polluting potentials.
This type represents
$(a)$ Spermatogonia
$(b)$ Secondary spermatocyte
$(c)$ Primary spermatocyte
$(d)$ Spermatid