Question

Write: What are 2 characteristics of animals in the mollusk group? (write 1... 2...)

Answer 1

Main characteristics of Mollusca :

• Unsegmented soft body with bilateral symmetry.

• Presence of an internal or external shell.

• A toothed tongue (made mostly of chitin) called the radula.

• A mantle which is a fold in the body wall that lines the shell.

• Muscular foot (and/or tentacles in some).

Answer 2

Molluscs (also known as molluscs) are smooth-bodied, bilaterally symmetrical, stratified, coelomatous animals; usually shelled with a mantle, ventral foot, anterior head, and visceral dorsal mass. Molluscans are very diverse animals and make up a significant part of the world's ecosystem.