Question

A. Tick () the correct options.
1. Exoskeleton and paired jointed legs are the characteristics of
(a) echinodermata
(b) arthropoda
(c) mollusca
(d) platyhelminthes
2. Body is divided into cephalothorax and abdomen in
(a) crustacea
(b) insecta
(c) arachnida (d) both (a) and (c)
3. Worm-like body divided into many segments is the characteristic of
(a) crustacea
(b) myriapoda (c) insecta
(d) arachnida
4. Which of the following is not a characteristic of mollusca?
(a) soft and unsegmented body
(b) presence of a hard shell
(c) move with the help of muscular foot (d) live only on land
5. Which of the following is not a characteristic of echinodermata?
(a) rough and unsegmented body
(b) move with tube feet or podia
(c) mostly live on land
(d) show both radial and bilateral symmetry​

Answer 1

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Explanation:

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