Question

(a) What is the role of hormones produced by ovaries?
(b) What is placenta? Describe its structure and function in humans?​

Answer 1

Answer:

the exchange of nutrients , oxygen and waste products between embryo and the mother takes place through the placenta

Explanation:

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Answer 2

$\huge\bigstar\underline\mathfrak{Answer}$

(a.)What is the role of hormones produced by ovaries?

======)The ovaries have two main reproductive functions in the body. They produce oocytes (eggs) for fertilisation and they produce the reproductive hormones, oestrogen and progesterone.

(b.) What is placenta? Describe its structure and function in humans?

=======)Placenta is a disc like structure that forms a connection between the embryo and the uterine wall. It is consists of numerous villi that increases the surface area for absorption. It is an organ of exchange that provides oxygen and nutrients to fetus and removes waste produced by fetus.

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