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Which of these structures is involved in blood circulation in cockroach?

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in Biology – Class 11 by (272k points)
Which of these structures is involved in blood circulation in cockroach?

(a) Ostia

(b) Malpighian tubules

(c) Ommatidia

(d) Phallomere

I had been asked this question in quiz.

My question comes from Animals Structural Organisations topic in section Structural Organisations in Animals of Biology – Class 11

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Right answer is (a) Ostia

For explanation: Out of the given structures, ostia is involved in blood circulation. It is present on either side of the funnel-shaped heart chambers. The circulatory system is of open type. Blood from the sinuses is pumped into the heart chambers through ostia.

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