Read the following and choose the option with not correct statements.

(i) The first menstruation begins at puberty and is called menarche and it ceases around 50 years of age which is termed as menopause.

(ii) During follicular phase of menstrual cycle, the primary follicles in the ovary grows to become a fully mature graafian follicle and simultaneously myometrium of uterus regenerates through proliferation.

(iii) During follicular phase of menstrual cycle, the secretion of gonadotropins increases gradually and stimulates follicular development as well as secretion of estrogen by growing follicles. Both LH and FSH attain a peak in the middle of cycle of about 14 th day in 28 day cycle.

(iv) In the middle of menstrual cycle, FSH surge induces rupture of graafian follicle and thereby the release of ovum, a process called ovulation.

(v) Corpus luteum secretes large amount of estrogen which is essential for maintained of endometrium.

(vi) The normal reproductive phase in female extends between menarche and menopause.

(vii) The process of release of sperm by penis into the vagina is called insemination.

(viii) In isthmus region of fallopian tube, fertilization takes place.

(ix) During fertilization, a sperm comes in contact with the zona pellucida layer of ovum an induces changes in it and block the entry of additional sperms.

(x) The zygote carrying XX sex chromosomes would develop into a female baby and XY would form a male.

(xi) The 1 st mitotic division of zygote is called cleavage and starts as zygote moves towards uterus and forms 2, 4, 8, 6, daughter cells called blastomere.

(xii) The embryo with 8 to 16 blastomeres is called blastula which continue to divide ad transforms into blastocyst.

(xiii) The blastomeres in the blastocyst are arranged into an outer layer called trophoblast and an inner group of cells attached to it called inner cell mass.