1.
_______ are invertebrates.
2.
Molluses are ________animals.
3.
Sponges are _________animals.
4.
When a grain of salt or sand enters in the body of oyster, then the process of ________formation begins around it.
5.
Snail, oyster and octopus are examples of_______.
6.
The body of insects divided into _____ parts
7.
Sponges have _______ internally.
8.
The body of insects is divided into _________ parts.
9.
Which molluscs are without shell.
10.
Worms have _______legs.
11.
Insects have _________pairs of legs.
12.
Stick insect is also known as ________ stick.
13.
Sponges have _______ externally.
14.
The body of _______ are not segmented.
15.
Worms are ________ bodied animals.
16.
Which molluscs is covered with shells.
17.
The body of worm is ________and cylindrical.
18.
The body of _______ is segmented.
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