Biology, asked by Shahnawaz786786, 1 year ago

How does exchange of gases occur in the following: a. fish b. cockroach?

Answers

Answered by Anonymous
9
exchange of gases occurs in fish by the help of gills.
exchange of gases occurs in cockroach by the help of small openings called spiracles.
Answered by KnowMore
3
The breathing organ called gills in fish is covered by operculum.

The oxygen dissolved in water is taken in by the fish in its mouth which is then passed through the gills in a way that the blood in it picks up the oxygen and flows in the opposite direction for absorption.

Carbon dioxide gain is released thorough gills.


Insects like cockroaches and earthworms have small spiracles in their body connected to trachea through which they take in oxygen and release carbon dioxide.
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