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Characters of Non-chordate Phyla
Concepts tested here
- Habitat of sponges
All Questions
2005 AIPMT 1 question
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From the following statements select the wrong one -Sponges (phylum Porifera) are mostly marine, but they are not exclusively marine.
Some sponges, such as Spongilla (freshwater sponge), live in fresh water.
So the statement that animals belonging to phylum Porifera are exclusively marine is wrong.
Prawn, a crustacean, has two pairs of antennae (antennules and antennae); true.
Millipedes (Diplopoda) have two pairs of legs on most body segments, because each apparent segment is formed by the fusion of two segments; true.
Nematocysts (stinging cells, cnidoblasts) are characteristic of phylum Cnidaria; true.
So the wrong statement is the one about Porifera being exclusively marine.