Allantois of the reptilian embryo helps in

Options :
  1. Nutrition& protection
  2. Excretion & Respiration
  3. Respiration&Nutrition
  4. Protection&Nutrition
Answer and Explanation :-

Answer: Option 2

Explanation:

Allantois is a membraneous growth from the central side of th hind gut of the devoloping vertebrate embryo,that extends outside the embryo proper& is covered by a layer of connective tissue containing many blood vessels

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