According to scientists, aves have evolved from :
(a) mammals
(b) amphibians
(c) reptiles
(d) arthropods

Q. Amphibians, reptiles, aves and mammals are

Q. According to scientists, aves have evolved from

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. How many organisms in the list given below respire through gills?
Sponges, Coelenterates, Flatworms, Aquatic arthropods, Molluscans, Fishes, Tadpoles, Reptiles, Aves, Mammals

Q.

Intervertebral disc is found in the vertebral column of

(a) birds (b) reptiles (c) mammals (d) amphibians