Biology, asked by ahassan4843786, 9 months ago

21. Which of the following is true about mammals
a) They have right aortic arch only
b) They have left aortic arch only
c) They have right end left aortic arches
d) They do not have any aortic arch

Answers

Answered by chandan090377

1

Answer:

I think

Explanation:

c. is correct answer

Answered by Anonymous

2

Answer:

Any reason?............

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