Breathing and Exchange of GasesEasy
Question
Which of the following is correctly states as it happens in the common cockroach ?
Options
A.Oxygen transported by haemoglobin blood
B.Nitrogenous excretory product is urea
C.The food is grounded by mandibles and gizzard
D.Malpighian tubules are excretory organs projecting out from the colon
Solution
In cockroach,mandibled are a pair of hard, strong, large, dark coloured triangular,structures which moves in horizontal motion and crush food between them. Gizzard orproventriculus has an outer layer of thick circular muscles and thick inner cuticle formingsix highly chitinous plates called teeth. The gizzard acts as the grinding chamber and helpsin grinding the food particles.
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