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Questions  

Which of the following statements about Periplaneta is incorrect? 

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By Expert Faculty of Sri Chaitanya
a
Males bear a pair of anal styles which are absent in females.
b
The haemolymph is composed of colourless plasma and coloured haemocytes.
c
A network of tracheae transports the atmospheric air directly to the tissues.
d
The gizzard helps in grinding the food particles.

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detailed solution

Correct option is B

The haemolymph is composed of colourless plasma and colourless haemocytes. Respiratory pigment is absent in insects.
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Similar Questions

Match the following and choose the correct option.

 Column – I Column – II
(a)Ovaries(i)4-6 abdominal segments
(b)Mushroom gland(ii)6-7 abdominal segments
(c)Testes(iii)2-6 abdominal segments
(d)Spermatheca(iv)6th abdominal segment
 abcd
1.iiiiiiiv
2.iiiiiiiv
3.iiiiiiiv
4.iiiiiiiv

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