Spermatogenesis is promoted by:
Therefore, from the above explanation we can say that spermatogenesis is promoted by Testosterone.
Hence, the correct answer is (C).
Identify the wrong statement from the following:
Post-ovulatory phase is also known as the luteal phase. During this period, the follicle proper folds inward on itself and transforms into the corpus luteum which is a steroidogenic cluster of cells that produces estrogen and progesterone. The action of progesterone increases the basal body temperature.
So, the correct answer is "Progesterone level is high during the post-ovulatory phase of the menstrual cycle."
The membranous cover of the ovum at ovulation is:
The outermost membranous cover of the ovum at ovulation is corona radiata. It is formed by follicular cells. Inner to corona radiata is zona pellucida, which is made up of three different glycoproteins secreted by the ovum itself.
A human female reaches menopause around the age of:
Which among the following has 23 chromosomes?
1. Zygote is also diploid and fertilized ovum formed by fusion of male and female gametes.
2. Spermatogonia are the cells on the inside wall of seminiferous tubules and consist of 46 chromosomes.
3. The secondary oocyte is a haploid cell that develops from the primary oocyte during puberty. It is a haploid cell with 23 chromosomes.
4. Oogonia are also diploid and are formed in the fetal ovary.
Given below is the figure of follicle:
Which of the following hormone levels will cause release of ovum (ovulation) from the graafian follicle?
Ovulation occurs when the level of hormones is as follows:
(a) Low concentration of progesterone.
(b) High concentration of LH.
(c) High concentration of FSH.
(d) High concentration of estrogens.
Hence, the correct option is (D).
Select the correct option of haploid cells from the following groups :
No new follicles develop in the luteal phase of the menstrual cycle because :
The presence of estradiol and progesterone in the luteal phase results in negative feedback on both FSH and LH secretion. Because of this negative feedback, the levels of FSH and LH are relatively low in the luteal phase. This inhibits FSH release and thus restricts follicular development during the luteal phase.
The difference between spermiogenesis and spermiation is
Spermiogenesis is transformation of spermatids into spermatozoa whereas spermiation is the release of the sperms from sertoli cells into the lumen of seminiferous tubule.
Select the incorrect statement
Thus, the correct answer is 'LH and FSH decrease gradually during the follicular phase.'