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IMPORTANT
Earn 100

Thin tubes that carry oxygen from the air to all the parts in cockroach constitute
(a)Tracheal system
(b)Haemolymph
(c)Lungs
(d)Gills

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Important Questions on Structural Organisation in Animals (Animal Morphology)
MEDIUM
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IMPORTANT
Malpighian tubules are lined by

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IMPORTANT
In cockroach, eye consists of visual units called

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External genitalia in cockroach consist of small irregular chitinous plates known as

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Structure responsible for cutting of food in cockroach are

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How many spiracles are present in Periplaneta americana?

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Jointed filamentous structures, present on tergum of 10th segment in both male and female cockroach are

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How many moults occur during metamorphosis in Periplaneta?

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In each segment of Periplaneta, sclerites are hardened plates of exoskeleton joined to each other by
