Choose the incorrect statement from the following:
- a.In birds and mammals internal fertilisation takes place
- b.Colostrum contains antibodies and nutrients
- c.Polyspermy in mammals is prevented by the chemical changes in the egg surface
- d.In the human female implantation occurs almost seven days after fertilisation
Identify the correct statement from the following:
- a.High levels of estrogen triggers the ovulatory surge.
- b.Oogonial cells start to proliferate and give rise to functional ova in regular cycles from puberty onwards.
- c.Sperms released from seminiferous tubules are highly motile.
- d.Progesterone level is high during the post ovulatory phase of menstrual cycle.
Spot the odd one out from the following structures with reference to the male reproductive system:
- a.Rete testis
- b.Epididymis
- c.Vasa efferentia
- d.Isthmus
Seminal plasma, the fluid part of semen, is contributed by. i. Seminal vesicle ii. Prostate gland iii. Urethra iv. Bulbourethral gland
- (a)i and ii
- (b)i, ii and iv
- (c)ii, iii and iv
- (d)i and iv
Spermiation is the process of the release of sperms from:
- a.Seminiferous tubules
- b.Vas deferens
- c.Epididymis
- d.Prostate gland
Mature Graafian follicle is generally present in the ovary of a healthy human female around:
- a.5 – 8 day of menstrual cycle
- b.11 – 17 day of menstrual cycle
- c.18 – 23 day of menstrual cycle
- d.24 – 28 day of menstrual cycle
Acrosomal reaction of the sperm occurs due to:
- a.Its contact with zona pellucida of the ova
- b.Reactions within the uterine environment of the female
- c.Reactions within the epididymal environment of the male
- d.Androgens produced in the uterus
Which one of the following is not a male accessory gland?
- a.Seminal vesicle
- b.Ampulla
- c.Prostate
- d.Bulbourethral gland
The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
- a.Spermatogonia have 46 chromosomes and always undergo meiotic cell division
- b.Primary spermatocytes divide by mitotic cell division
- c.Secondary spermatocytes have 23 chromosomes and undergo second meiotic division
- d.Spermatozoa are transformed into spermatids
Match between the following representing parts of the sperm and their functions and choose the correct option. Column I Column II A. Head i. Enzymes B. Middle piece ii. Sperm motility C. Acrosome iii. Energy D. Tail iv. Genetic material HUMAN REPRODUCTION 19 options:
- a.A-ii, B-iv, C-i, D-iii
- b.A-iv, B-iii, C-i, D-ii
- c.A-iv, B-i, C-ii, D-iii
- d.A-ii, B-i, C-iii, D-iv
Which among the following has 23 chromosomes?
- a.Spermatogonia
- b.Zygote
- c.Secondary oöcyte
- d.Oögonia
Match the following and choose the correct options: Column I Column II A. Trophoblast i. Embedding of blastocyst in the endome trium B. Cleavage ii. Group of cells that would differentiate as embryo C. Inner cell mass iii. Outer layer of blastocyst attached to the endometrium D. Implantation iv. Mitotic division of zygote Options:
- a.A-ii, B-i, C-iii, D-iv
- b.A-iii, B-iv, C-ii, D-i
- c.A-iii, B-i, C-ii, D-iv
- d.A-ii, B-iv, C-iii, D-i
Which of the following hormones is not secreted by human placenta?
- a.hCG
- b.Estrogens
- c.Progesterone
- d.LH
The vas deferens receives duct from the seminal vesicle and opens into urethra as:
- a.Epididymis
- b.Ejaculatory duct
- c.Efferent ductule
- d.Ureter
Urethral meatus refers to the:
- a.Urinogenital duct
- b.Opening of vas deferens into urethra
- c.External opening of the urinogenital duct
- d.Muscles surrounding the urinogenial duct
Morula is a developmental stage:
- a.Between the zygote and blastocyst
- b.Between the blastocyst and gastrula
- c.After the implantation
- d.Between implantation and parturition
The membranous cover of the ovum at ovulation is:
- a.Corona radiata
- b.Zona radiata
- c.Zona pellucida
- d.Chorion
Identify the odd one from the following:
- a.Labia minora
- b.Fimbriae
- c.Infundibulum
- d.Isthmus