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Amphibia

Amphibians do...

Question

Question 15
Amphibians do not have the following

(a) Three chambered heart
(b) Gills or lungs
(c) Scales
(d) Mucus glands

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Solution

(c) Scales

They have moist, scaleless skin

Amphibians absorb water and undergo gas exchange through their skin.

Scales are present in Pisces and Reptiles only.

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Question 22
Two chambered heart is found in

(a) crocodiles
(b) fish
(c) aves
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Q. Question 22
Two chambered heart occurs in

(a) crocodiles
(b) fish
(c) aves
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Q. Question 11
Find out the false statement

(a) Aves are warm blooded, egg laying and have four chambered heart
(b) Aves have feather covered body, fore limbs are modified as wing and breathe through lungs.
(c) Most of the mammals are viviparous.
(d) Fishes, amphibians and reptiles are oviparous

Q. The heart of mammals and birds is four-chambered, while fishes have two-chambered hearts and amphibians and reptiles have three-chambered hearts. The hearts of birds and mammals are:

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