1. The stinging cells on the tentacles of cnidarians are known as _______.
Fill in the blanks.
1. The stinging cells on the tentacles of cnidarians are known as _______.
2. Laccifer lacca which produces lac, belongs to phylum __________.
3. Excretion in molluscs occurs by _________.
4. The annelid with locomotory structures like setae is ________
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