MCQ
Mutations are responsible for
- AIncreasing the population rate
- ✓Variations in organisms
- CConstancy in organisms
- DFor beneficial changes in organisms
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| Animals | Morphological features | |
| $(i)$ | Crocodile | $4$-chambered heart |
| $(ii)$ | Sea urchin | Parapodia |
| $(iii)$ | Obelia | Metagenesis |
| $(iv)$ | Lemur | Thecodont |