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Digestive tract with additional chamber crop and gizzard is a feature of

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Given below are some general characters of a chordate . (A) skin is dry without glands, except oil gland at the base of the tail. (B) warm-blooded (homeothermic) animal. (C) The heart is completely four-chambered with right systemic arch. (D) The digestive tract has additional chambers , the crop and gizzard . Identify the animal on the basis of these characters.

Given below are some general characters of a chordate . (A) skin is dry without glands, except oil gland at the base of the tail. (B) warm-blooded (homeothermic) animal. (C) The heart is completely four-chambered with right systemic arch. (D) The digestive tract has additional chambers , the crop and gizzard . Identify the animal on the basis of these characters.

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Which avian feature indicate reptilian ancestry ? (a) Two special chambers crop and gizzard in digestive tract (b) Eggs with calcareous shells (c) Four chambered heart (d) Scales on hind limbs