Biology
Related Questions
Match the items given in Column I with most appropriate ones in Column II and rewrite the correct matching pairs:
Column I Column II (a) Leydig Cells Lack of thyroxine in children (b) Stoma 12 pairs (c) Ova Testosterone (d) Cranial nerve Diffusion of respiratory gases (e) Cretinism Haploid cells 31 Pairs Diploid cells Assertion: Seminiferous tubules produce sperms.
Reason: Seminiferous tubules secrete Oxytocin, which aids in the production of sperm.
- A is True, and R is false.
- A is False, and R is true.
- Both A and R are true.
- Both A and R are false.
The diagram given below shows a section of the human ovary.

(a) Name the process for the release of the part labelled 1.
(b) Write the name of the structure marked 2.
The onset of menstruation in a human female is called:
- Menopause
- Menarche
- Ovulation
- Oogenesis