Which of the following is not true of the ovaries?
o a. the ovarian follicle secretes both estrogen and progesterone.
b. the corpus luteum secretes both estrogen and progesterone.
c. each ovary contains two types of glandular structures.
d. all of the above are true of ovaries.

The ovarian follicle secrets both estrogen and progesterone hormone.

Explanation:

Ovarian follicles are roughly spherical structure that are the basic unit of female reproductive system.Ovarian follicle cells secrete Follicle stimulating hormone (FSH) and luteinizing hormones (LH)They contain two type of cells- Granulosa cells and Theca of follicle.The granulosa cells contain FSH hormone that is require to express LH hormone receptor,located on their surface.The theca cells contain theca interna and theca externa, that synthesizes androgen hormones which is indirecty responsible for the production of E2 hormone by providing androstenedione to the neighbouring cells of granulosa cells with the help of enzyme aromatase.

Dthrough a slow process