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Q.

Match the following with regard to Periplaneta americana.

 Column I  Column II 
(a)Phallomeres(i)Digestive system
(b)Haemolymph(ii)Respiratory system
(c)Hypopharynx(iii)Circulatory system
(d)Tracheoles(iv)Reproductive system

Select the correct option.

 (a)(b)(c)(d)
1.iviiiiii
2.iviiiiii
3.iiiiviii
4.iviiiiii

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a

2

b

1

c

3

d

4

answer is D.

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Detailed Solution

detailed_solution_thumbnail

In cockroaches,

  • haemolymph (blood) aids in circulation.
  • hypopharynx (tongue) is a mouthpart (part of digestive system). 
  • tracheoles help in exchange of gases (respiration).
  • phallomeres are copulatory structures which aid in reproduction.
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