Which one of the following is the effect of higher $pH$ on the sperms?

Match the columns.

Column $I$	Column $II$
$(a)$ Corpus luteum	$(1)$ Initially in abdominal cavity then in scrotum
$(b)$ Testis	$(2)$ At the anterior part of scrotum in male
$(c)$ Myometrium	$(3)$ Graafian follicle
$(d)$ Penis	$(4)$ Uterus

The hormone that maintains the secretory activity of the corpus luteum as well as the increase in the size of the mammary glands is

Which of the following is an example of a polyoestrous mammal?

Oestrus cycle is seen in

Fill in the blanks:
$(a)$ Humans reproduce . . . . . . (asexually/sexually)
$(b)$ Humans are . . . . . . (oviparous/viviparous/ovoviviparous)
$(c)$ Fertilization is . . . . . . in humans. (external/internal)
$(d)$ Male and female gametes are . . . . . . (diploid/haploid)
$(e)$ Zygote is . . . . . . (diploid/haploid)
$(f)$ The process of release of the ovum from a mature follicle is called . . . . . .
$(g)$ Ovulation is induced by a hormone called the . . . . . .
$(h)$ The fusion of the male and the female gametes is called . . . . . .
$(i)$ Fertilization takes place in the . . . . . .
$(j)$ The zygote divides to form . . . . . . which is implanted in the uterus.
$(k)$ The structure which provides vascular connection between the fetus and uterus is called . . . . . .