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Which of the following is correctly stated as it happens in the common cockroach?
Option: 1
Malpighian tubules are excretory organs projecting out from the colon
Option: 2
oxygen is transported by haemoglobin in blood
Option: 3
Nitrogenous excretory product is urea
Option: 4
The food is ground by mandibles and gizzard
Answers (1)
In cockroaches, malpighian tubules project from the midgut, hemocyanin is the respiratory pigment that helps in the exchange of gases and ammonia. Mandibles and gizzards help to grind food.
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