The World of Molluscs
General Knowledge
Molluscs are a group of invertebrate animals with soft boneless bodies. Some molluscs have a hard shell on their body. Read the clues about some well known molluscs and write their names.
2. Commonly seen in the gardens these animals have a hard shell made up of calcium carbonate.
1. This animal found in the oceans, has eight tentacles and a head. It's well developed nervous system makes it more intelligent than any other invertebrate.
Ans. Octopus.
Ans. Snail.
3. Biggest invertebrate animal in the world. Also has the biggest it is which is about the size of a football.
Ans. Colossal Squid
4. These molluscs are found in the oceans. They have tentacles surrounding their mouth and can change their body colour to hide themselves.
Ans. Cuttlefish
5. These molluscs are farmed by people for pearls and also for food. Each one lies inside a hard shell.
Ans. Oyster
6. These shelled models are formed both in oceans and in freshwater. They are eaten for food by many animals and also by humans.
Ans. Clam
Extra facts
• The snails 🐌 that do not have a shell are called SLUGS.
• A giant clam is so big that it can weigh upto 200 kg.
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