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KCET · BIOLOGY · STD 11 - 4. Animal Kingdom

Identify the correct statements/regarding class aves.
I. Forelimbs are modified into wings and hindlimbs are modified for walking and swimming.
II. Heart is completely four chambered.
III. They are homeotherms.
IV. They are oviparous and development is direct.

  1. A Both I and III
  2. B Both I and IV
  3. C I, II and III
  4. D All of these
Verified Solution

Answer & Solution

Correct Answer

(D) All of these

Step-by-step Solution

Detailed explanation

(D) All of these
Members of class Aves are homeothermic or warm-blooded. Their forelimbs are modified into wings and help in flying while hind limbs or legs are well adapted for perching, walking and swimming. The heart of the birds is four chambered. They are oviparous and fertilisation takes place internally. Therefore all statements are correct.