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In the abdomen of Cockroach, the ventral nerve cord is absent in the following segments

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Important Questions on Structural Organization in Animals

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The following are the joints of each leg of a cockroach
I) Tibia
II) Coxa
III Tarsus
IV) Femur
V) Trochanter

Arrange these in order.

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Match the following and choose the correct combination.
List I List II
i Proventriculus a The anterior chamber of the preoral cavity
ii Cibarium b Stomodaeum
iii Hindgut c Enzymatic digestion
iv Foregut d Real Absorption of water
v Mesenteron e Grinding food
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Ventilation movements in cockroach are performed        
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What extermal changes are visible after the last moult of a cockroach nymph _____