Question

Ladder like nervous system is a feature of :- 1) Coelenterata 2) Ctenophora 3) Platyhelminthes 4) Porifera

Answer 1

Ladder like nervous system is a feature of Platyhelminthes

Answer 2

Ladder like nervous system is a feature of Platyhelminthes

Explanation:

• The phylum name Platyhelminthes exactly means "flatworms." Members of this phylum are soft, thin-bodied, leaf or ribbon like worms, including the familiar planaria of ponds and streams, as well as the flukes and tapeworms parasitic in human and other animal bodies.
• Most freshwater flatworms are free-living and can be found in ponds, lakes, streams, ditches, and temporary puddles.
• They live under rocks, plants, and debris to avoid direct sunlight. They can be found on hard and soft substrates, but are more common on the hard surfaces.

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