Characteristics of Phylum Ctenophora
Answers
Explanation:
1 They are free-swimming, marine, solitary, pelagic animals.
2 The body is transparent, gelatinous, pear-shaped, cylindrical, or flat or ribbon-shaped
.
3 They have a biradially symmetrical body along an oral-aboral axis.
Answer:
Characteristics of Phylum Ctenophora:
Explanation:
1. They lack nematocysts.
2. They have special adhesive and sensory cells i.e. colloblasts or lasso cells present in tentacles which helps in food captures.
3. They lack skeletal, circulatory, respiratory, and excretory organs.
4. Their nervous system is diffused types and the aboral end bears a sensory organ, called statocyst.
5. They are monoecious (hermaphrodite); gonads are endodermal situated on walls of digestive canals.
6. Their development direct with characteristic cydippid larva.
7. They lack asexual reproduction and alternation of generation.
8. Regeneration and paedogenesis are common in them.
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