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Read the following statements and choose the follwoing option: 1. The hindlimbs in aves are modified into wings 2. Birds are homiothermous 3. The digestive tract of birds has additional chambers, the crop and gizzard. 4.Heart is completely four- chambered. 5. Fertilisation is internal in Aves

Options

  1. ABoth 1 and 5 are incorrect
  2. BAll are correct
  3. COnly 1 is correct
  4. DOnly 1 is incorrect

Correct answer

D. Only 1 is incorrect

Step-by-step solution

The forelimbs in aves are modified into wings. The hind limbs generally have scales and are modified for walking, swimming or clasping the tree branches.They are warm-blooded (homoiothermous) animals, i.e.,they are able to maintain a constant body temperature.

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