Biology
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
Related Questions
The outermost layer of uterine wall around the foetus is :
- Choroid
- Allantois
- Chorion
- Amnion
The period of pregnancy is called :
- Parturition
- Implantation
- Copulation
- Gestation
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)
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