In Animals- All animals need to respire, be it a cockroach a fish or an elephant. earthworms take in air through their skin surface the skin is kept moist with the help of a substance called mucous oxygen of the air gets directly absorbed through the moist skin a carbon dioxide is given out
In Aquatic Animals And Plants- Most aquatic animals like fish, tadpole crab and shrimp have special organs for respiration called gill. Gills help to take in oxygen and give out carbon dioxide. Some animals that live in water, e.g. whales come up to the water surface to breathe in oxygen from the air. Others, for example, fish, breathe in oxygen dissolved in water. Fishes have organs called gills, instead of Lungs. When water passes through the gills, oxygen dissolved in the water is absorbed..
In Amphibians –Amphibians like frog and salamander need breathing systems for both air and water. Frogs have well developed lungs to breathe in air when on land in water, frogs breathe with the help of their moist skin.
In Birds-Birds have a pair of lungs with air sacs that remain open all the time, so that air can easily pass through them.
Which of the following are correct : (a) Earthworm respirate with the help of skin. (b) Dogs respirate with the help of lungs. (c) Fish respirate with the help of gills. | |||
Right Option : D | |||
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Which of the following are correct : (a) Earthworm respirate through skin. (b) Fish respirate through Gills. | |||
Right Option : C | |||
View Explanation |
The respiratory organ in fish are______________. | |||
Right Option : C | |||
View Explanation |
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