Question

4. Arpit thinks that a tadpole is a fish as it lives in water and breathes through gills. Do you agree
with the statement? Give reasons......
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Answer 1

Answer:

No, tadpoles are not fish but are frogs. fish breathe in water using gills. Water flows across the gills and blood is allowed to exchange oxygen and carbon-dioxide. Tadpoles breathe the same way as fish during that stage of life before maturing into frogs that use their lungs to breathe.

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Answer 2

Answer:

No, I do not agree with Arpit because a tadpole is not a fish. It is an amphibian.

Explanation:

• Tadpole is the larva of a frog which stays in the water and can respire through gills but as soon as it grows into a frog it will have well-developed lungs to respire through the process of Pulmonary respiration, therefore it is never considered like a fish.
• Amphibians are one of the Phyla of the animal kingdom whose characteristic feature is that their habitat is both Terrestrial and aquatic.
• They are considered to be the first vertebrate to make the transition from aquatic to Terrestrial mode of life.
• These are those animals which Hibernate in water and do aestivation in summer.
• It has two pairs of pentadactyl limbs and they have the most diverse range of respiratory organs they can respire through:

1. The lungs-pulmonary respiration
2. Respire through the lining of the buccopharyngeal cavity
3. Can respire through their gills this feature is mainly present in larvae
4. They can respire through their skin which is called cutaneous respiration.

They are the first vertebra in which Atlas bone is specialized to provide some movement they have a large mouth and have Acrodont teeth.

Animals like Bufo, Rana tigrina which is an Indian frog, salamander and many more are considered to be amphibians.

The life cycle of a frog

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