Structural Organisation in Animals (Frog) — Important Questions
ICSE · Class 11 · Biology
90 important questions from Structural Organisation in Animals (Frog) for ICSE Class 11 Biology, with answers. Includes mcq and multiple choice questions.
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Important Questions from Structural Organisation in Animals (Frog)
To which class does the frog (Rana tigrina) belong?
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Amphibia
Rana tigrina belongs to Class Amphibia. Frogs are amphibians — they can live both on land and in freshwater. They belong to Order Anura (without tail).
What is the scientific name of the Indian bull frog?
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Rana tigrina
The Indian bull frog is scientifically named Rana tigrina. It is the most common, largest, and most noisy species of frog found in India.
What is 'aestivation' in frogs?
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Summer sleep to escape heat
Aestivation (also called summer sleep) is a dormant state that frogs enter during peak summer to escape extreme heat. They take shelter in deep burrows. Hibernation is the corresponding winter sleep.
How many chambers does a frog's heart have?
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3
A frog's heart has 3 chambers: 2 auricles (atria) + 1 ventricle. This is unlike the mammalian heart which has 4 chambers (2 auricles + 2 ventricles). The frog's single ventricle leads to mixing of oxygenated and deoxygenated blood.
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