........ is a diagnostic features of phylum Porifera.
a. Presence of spicules for skeleton.
b. Incomplete digestive system
c. Exclusive marine habitat
d. Asexual reproduction
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Answered by
9
The presence of spicules for skeleton is the diagnostic features of phylum Porifera.
Option (a)
Explanation:
- Porifera phylum also known as 'sponges' are mainly categorised on the basis of the presence of spicules on them.
- This is the structural element of the phylum Porifera. It gives 'support and protection from predators'.
- These spicules are divided into two the visible one is known as megascleres and the smaller ones are known as microscleres.
- These are in the form of 'cylinders with pointed ends'. They are found in many axons shapes.
Learn more about Porifera
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Answered by
3
Answer:
(a)
Explanation:
presence of spicules for skeleton
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