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