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- #Diversity in Living World
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Three chambered heart of frog is not as efficient as four chambered heart of human because
Option: 1
Oxygenated and deoxygenated blood mix up
Option: 2
Ventricle does not pump blood properly
Option: 3
It does not hold enough blood
Option: 4
Human muscles are not strong
Answers (1)
Class Amphibia - Characteristics Features -
- The animals belonging to this class live in water as larvae and on land as adults. They need water to complete their life cycles.
- They have a characteristic smooth and moist skin with many glands.
- Scales are absent from their body.
- Their body is divided into head and trunk. There is no neck.
- Out of two pairs of limbs, the forelimbs are smaller than hind limbs. The hindlimbs are muscular and help in jumping. They have webbed-feet that allow swimming.
- Their eyes are covered with movable lids called nictitating membrane.
- Tympanum is the hearing organ. There is no external ear.
- The respiratory organs include gills, lungs and skin.
- They are cold blooded.
- They have a three chambered heart.
They have separate sexes. Fertilization occurs externally in water. Development is indirect and involves metamorphosis.
In three-chambered heart oxygenated blood is mixed with deoxygenated blood in the ventricle.
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