Advertisements
Advertisements
Question
Ovulation is induced by a hormone called __________.
Solution
Ovulation is induced by a hormone called Luteinising hormone.
Explanation:
LH (luteinising hormone) acts at the Leydig cells and stimulates the synthesis and secretion of androgens. Androgens, in turn, stimulate the process of spermatogenesis.
APPEARS IN
RELATED QUESTIONS
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions
(a) Acrosome
(b) Nucleus
(c) Middle piece
Explain the development of a secondary oocyte (ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.
Body breaks up into several fragments and each fragment starts to live as a new individual. This is ______ type of reproduction.
At the time of birth, there are _______________ oocytes in the ovary of a female foetus.
Give scientific reason.
There is a menopause when women are 45-50 years old.
Explain two main process in sexual reproduction.
Mention the differences between spermiogenesis and spermatogenesis.
Describe the structure of the human ovum with a neat labelled diagram.
Expand the acronym.
LH
Which of the following events take place during spermatogenesis?
How many sperms are formed from a secondary spermatocyte?
Acrosome reaction in sperm is triggered by ______.
Connective tissue around seminiferous tubules possess endocrine cells called ______.
Besides activating the egg another role of a sperm is to carry ______ to egg.
Which of the following groups of cells in the male gonad, represent haploid cells?
The prostate gland and seminal vehicle perform the function of ______.
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n = 50 shall be:
In human females, meiosis II is not completed until:
Sketch and label the process of oogenesis.
