HUMAN REPRODUCTION STRUCTURE & FUNCTION

1. Choose the incorrect statement from the following:

• a. In birds and mammals internal fertilisation takes place
• Colostrum contains antibodies and nutrients
• Polyspermy is prevented by the chemical changes in the egg surface
• In the human female implantation occurs almost seven days after fertilisation

2. Identify the wrong statement from the following:

• High levels of estrogen triggers the ovulatory surge.
• Orgonial cells start to proliferate and give rise to functional ova in regular cycles from puberty onwards
• Sperms released from seminiferous tubules are poorly motile / non-motile.
• Progesterone level is high during the post ovulatory phase of menstrual cycle.

3.Spot the odd one out from the following structures with reference to the male reproductive system:

• Ret testis
• Epididymis
• Vasa efferentia
• Isthmus

4.Seminal plasma, the fluid part of semen, is contributed by. i. Seminal vesicle ii. Prostate iii. Urethra iv. Bulbourethral gland

• i and ii
• i, ii and iv
• ii, iii and iv
• i and iv

5.Spermiation is the process of the release of sperms from:

• Seminiferous tubules
• Vas deferens
• Epididymis
• Prostate gland

Mature Graafian follicle is generally present in the ovary of a healthy human female around stet:

• 5 – 8 day of menstrual cycle

• 11 – 17 day of menstrual cycle

• 18 – 23 day of menstrual cycle

• 24 – 28 day of menstrual cycle

Acrosomal reaction of the sperm occurs due to:

• Its contact with zona pellucida of the ova
• Reactions within the uterine environment of the female
• Reactions within the epididymal environment of the male
• Androgens produced in the uterus

Which one of the following is not a male accessory gland?

• Seminal vesicle
• Ampulla
• Prostate
• Bulbourethral gland

The immature male germ cell undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.

• Spermatogonia have 46 chromosomes and always undergo meiotic cell division
• Primary spermatocytes divide by mitotic cell division
• Secondary spermatocytes have 23 chromosomes and undergo second meiotic division
• Spermatozoa are transformed into spermatids

Which among the following has 23 chromosomes?

• Spermatogonia
• Zygote
• Secondary oocyte
• Oögonia