Given below is a diagrammatic sketch of a portion of human male reproductive system. Which of the following part contributes to the maximum portion of semen?

Study the flow chart. Name the hormones labelled as $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$ at each stage.

Choose the correct option.

Which of the following labelled parts produces energy for the movement of the tail that facilitates sperm motility essential for fertilisation?

The figure given below depicts a diagrammatic sectional view of ovary. Which one set of three parts out of $\mathrm{I}-\mathrm{VI}$ are correctly identified?

Identify the hormones that are secreted in large amount prior to ovulation

A. $\mathrm{LH}$
B. $\mathrm{FSH}$
C. Estrogen
D. Progesterone

Following the diagram of an ovum surrounded by few sperms:

Which of the following option is correct for the labelled parts $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ ?

Identify the stages $\mathrm{A}$ and $\mathrm{B}$ and select the correct labelling of $\mathrm{C}$ and $\mathrm{D}$.

Choose the correct option.