Q1 of 525 Page 239

Wins are absent in bed bug even then it is considered an insect. Why?

Wings are absent in bed bug (Cimex) even then it is considered an insect because it possesses following basic characteristics of class Insecta;

(i) Its body is divisible into head, thorax and abdomen.


(ii) Its exoskeleton is made up of chitin.


(iii) It has three pairs of jointed thoracic legs.


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2

(a) Identify the organism.

(b) Label the part a1 and 2.


(c) Write the mode the nutrition in this animal.


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(a) To which group this organism belongs?

(b) Label the parts marked 1 to 7.


(c) What is the function of part marked 7?


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Why are whales not grouped in fishes?