Question

what is Mollusca in biology??​

Answer 1

Answer:

Phylum

Explanation:

There is a classification among animals which is divided into kingdom to species  

kingdom - phylum - class - order - family - genus -species

So, this mollusca is belongs to the phylum stage.

To know more information verify the 11 th class biology text book.

Answer 2

$\huge{\underline{\tt{\green{Characteristics\:Of\:Mollusca-}}}}$

• They've 3 parts : anterior head, a ventral muscular foot and dorsal visceral mass.

• They excrete from organ called bojanus.

• They are triplobrastic.

• They are bilateral symmetrical.

• Body is soft and unsegmented.

• They have an open circulatory system.

• They have kidney like organs for excretion.

• Locomotion occurrs by foot.

• They use gills for respiration.

• They have outer shells which protect the body.

• They have blue colour blood due to presence of haemocyanin.

• Mollusca is the second largest phylum.

• Example - Pila, oyster, squids, sepia, slugs, mussels.