Biology
Given below are the functions of male accessory glands in humans.
(i) Prostate gland pours an acidic secretion into the semen.
(ii) The secretion of bulbo-urethral glands serves as a lubricant.
(iii) The secretion of prostate gland neutralises the alkali in a human vagina.
(iv) The secretion of seminal vesicles serves as a medium for the transportation of the sperms.
Which of the above options are correct ?
- (i) and (ii)
- (ii) and (iii)
- (ii) and (iv)
- (iii) and (iv)
Related Questions
The period of pregnancy is called :
- Parturition
- Implantation
- Copulation
- Gestation
The canal through which each testis descends into the scrotum just before the birth of a male baby is :
- Acrosome
- Epididymis
- Efferent duct
- Inguinal canal
Gaurav and Garima are the children of Mr. and Mrs. Pandey. The children are fraternal twins.
Which of the following options explains the appropriate features of these twins ?P: Fraternal twins are produced from one zygote which splits after the morula stage and produces two children at the same time.
Q: Fraternal twins must have two opposite sexes, i.e. one boy and one girl.
R: These twins are biologically diorular or dizygotlic.
S: Two eggs are released from ovaries at a time and both get fertilized.
- P and Q
- Q and R
- R and S
- S and P
Assertion (A): The placenta is a vital organ during pregnancy, responsible for providing nutrients and oxygen to the developing foetus.
Reason (R): The placenta develops from the fusion of the zygote and the endometrial lining, forming a specialized tissue structure that facilitates the exchange of substances between the maternal and foetal bloodstreams.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.