Question

1write down the diagonistichadates?
2- write down the characteristics features of mollusca?

Answer 1

Phylum- MOLLUSCA,

1. Habitat:
They are mostly marine. Many, however, occur in fresh water and some even in damp soil.


2. Body Form:
The body of molluscs is un-segmented with a distinct head, muscular foot and visceral hump. Neopilina is a segmented mollusca.

3. Symmetry:
They usually show bilateral symmetry. In some molluscs like Pila, due to torsion (twisting) during growth, the adults become asymmetrical.