MCQ
Unit cell of blastula is
- AMicromere
- BMegamere
- ✓Blastomere
- DNone of the above
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$B:$ It act as intercellular messengers and are produced in large amount
| List-l (Interacting species) | List-II (Name of Interaction) |
| (A) Flamingoes and resident fishes | (I) Competition |
| (B) Lice on humans and ticks on dogs | (II) Parasitism |
| (C) Lichens | (III) Mutualism |
| (D) An orchid growing on a mango branch | (IV) Commensalism |