In human beings, the eggs are:

Some important events in the human female reproductive cycle are given below.Arrange the events in a proper sequence.A-secretion of FSH, B-growth of corpus luteum, C-growth of the follicle and oogenesis, D-ovulation, E-sudden increase in the levels of LH

1st polar body is formed at which state of oogenesis?

Which one of the following is the most likely root cause why menstruation is not taking place in the regularly cycling human female?

Which one of the following statements is false in respect of viability of mammalian sperm?

Name the calls that nourish the germ cells in the testes.Where are these cells located in the testes?

When do oogenesis and spermatogenesis initiate in human female and male,respectively?

What is ehaculatory duct?

What is urethral meatus?

Name the ducts received by urethra in a human male.

Bring out the differences between secondary and tertiary follicles.

Define ovulation.When does it occur?

Differentiate between morula and blastocyst.

Mention the target cells of lutenising hormone in human males and females.Explain the effect and the changes which the hormone induces in each case.

Name the source of gonadotropins in human females.Explain the changes brought about in the ovary by these hormones during menstrual cycle.

Describe the different parts of the fallopian tube of human female reproductive system.

(a) Mention the event of meiosis that occurs in the tertiary follicle in a human ovary.
(b) Name the phase of menstrual cycle,when a Graafian follicle transforms into an endocrine structure.Write its action thereafter.

(a) Draw a diagramatic sectional view of human ovary showing different stages of oogenesis along with corpus luteum.
(b) Where is morula formed in human?Explain the process of its development from zygote.

Purnima visited her native village with her grandmother. In the village, she saw some ladies, even pregnant, were smoking bidies. She also saw a child cleft palate in the lap of one of the returns home. On the way, she told Dadaji that she is planning to start campaign to make these illiterate women aware about ill effects of tobacco on health.
Read the above passage and answer the following questions:
(i)   Is there any harmful effect of use of tobacco smoking on our health?
(ii)  Explain briefly the effects of smoking on human health?
(iii) What is the effects of tobacco on next generation?

How is 'oogenesis' markedly different from spermatogenesis with respect to the growth till puberty in the humans?