Sperms have a tail whereas egg does not, why?

Mark the odd one in each series.

Scrotum, rete testis, Fallopian tube, vas deferens.

Mark the odd one in each series.

Ovary, uterus, vagina, ejaculatory duct.

Mark the odd one in each series.

Prostate gland, testis, seminal vesicle, Cowper's gland.

Mark the odd one in each series.

Fallopian tube, vagina, uterus, ovaries.

The events of the menstrual cycle are represented as follows.

(i) Menstrual phase.
(ii) Follicular phase.
(iii) Ovulatory phase.
(iv) Luteal phase.
Recall these events and state the levels of hormones (FSH, LH, progesterone) simply by mentioning high or low.
On 19th day.