Classification of Animal Kingdom MCQs for NEET — Zoology Questions with Answers

The NCERT text states: 'Classes, Amphibia, Reptilia, Aves and Mammalia have two pairs of limbs and are thus grouped under Tetrapoda.' Mammary glands are unique to mammals, egg-laying with calcareous shells is characteristic of birds/some reptiles, and poikilothermous is for fishes, amphibians, and reptiles, not mammals or birds.

The NCERT excerpt on mammals mentions, 'Heart is four-chambered.' Additionally, the Vertebrata section states, 'vertebrates have a ventral muscular heart with two, three or four chambers', and mammals specifically have four.

The context states: 'Sexes are separate and fertilisation is internal. They are viviparous with few exceptions and development is direct.' Also, 'Different types of teeth are present in the jaw.' Scales are characteristic of reptiles and some other groups, but not generally mammals according to the provided text which highlights unique features like hair.

The NCERT text explicitly states: 'The members of subphylum Vertebrata possess notochord during the embryonic period. The notochord is replaced by a cartilaginous or bony vertebral column in the adult. Thus all vertebrates are chordates but all chordates are not vertebrates.' Protochordates, for example, retain the notochord or have it only in larval stages without replacement by a vertebral column.

The NCERT text for Mammalia states: 'External ears or pinnae are present.'

The examples provided include 'Panthera tigris (Tiger), Panthera leo (Lion)'. Thus, Panthera leo is an example from genus Panthera.

The NCERT text for Mammalia states: 'They are homoiothermous.' Homoiothermous means warm-blooded, capable of maintaining a constant body temperature irrespective of the external environment, contrasting with poikilothermous (cold-blooded).

The 'LOCOMOTION_AND_MOVEMENT' chapter states: 'Our vertebral column (Figure 17.7) is formed by 26 serially arranged units called vertebrae and is dorsally placed.'

The 'LOCOMOTION_AND_MOVEMENT' chapter states: 'The vertebral column protects the spinal cord, supports the head and serves as the point of attachment for the ribs and musculature of the back.'

The NCERT text states: 'Subphyla Urochordata and Cephalochordata are often referred to as protochordates and are exclusively marine.'