invertebrates

Question 1

tell me the 6 groups of invertebrates

Answer 1

worms, arthropods, molluscs, cnidaria, sponges and echinoderms

Question 2

Characterestics of invertebrates

Answer 2

They haven’t got backbone. Some of them have got hard parts as shells, or exoesqueleton or soft body.

Question 3

Characteristics of arthropods

Answer 3

They have exoesqueleton, they have got jointed legs and they have body sections.

Question 4

Characteristics of molluscs

Answer 4

They can live underwater or on earth. They have got soft body. Some of them have got shells.

Question 5

Characteristics of sponge

Answer 5

They live attached to rocks, They have got pores. They filter sea water through their pores to obtain food.
They have different shapes and colours

Question 6

Say true or false
Echinoderms are marine invertebrates.

Answer 6

true

Question 7

An octopus is a cnidarians

Answer 7

False, it is a mollusc.

Question 8

A spider is an insect. It has got 6 legs and its body is divided in 3 parts: head, torax and abdomen.

Answer 8

False, a spider is an arachnid, It has got 8 legs and its body is divided in 2 parts: cephalotorax and head.