(ii) Heart and circulatory system are formed in the embryo by the end of ________ months of pregnancy.

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Answer:
Heart and circulatory system are formed in the embryo by the end of one to two months of pregnancy.

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Cardiac Cycle

Standard IX Biology

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​ (ii) Heart and circulatory system are formed in the embryo by the end of ________ months of pregnancy.

Answer: ​ Heart and circulatory system are formed in the embryo by the end of one to two months of pregnancy.

(ii) Heart and circulatory system are formed in the embryo by the end of ________ months of pregnancy.

Answer:
Heart and circulatory system are formed in the embryo by the end of one to two months of pregnancy.