Multiple Choice QuestionsWhich of the following represents the correct combination without any exception?
| Characteristic | Class |
| Mammary gland;Â hair on body; pinnae; two pairs of Limbs | Mammalia |
| Characteristic | Class |
| Mouth ventral, gills without operculum; skin with placoid scales; persistent notochord | Chondricht hyes |
| Characteristic | Class |
| Sucking and circular mouth; jaws absent, integument without scales; paired appendages | Cyclostomata |
| Characteristic | Class |
| Sucking and circular mouth; jaws absent, integument without scales; paired appendages | Cyclostomata |
Capacitation refers to changes in theÂ
Sperm before fertilization
Ovum before fertilization
Ovum after fertilization
Ovum after fertilization
A.
Sperm before fertilization
Capacitation refers to activation of sperm cells before fertilisation. It involves reorganisation of molecules in the outer membrane of sperm head.
Capacitated sperm releases enzymes from their acrosomes to penetrate the cells and zona pellucida surrounding the egg.
Which of these is not an important component of initiation of parturition in humans?
Increase in oestrogen and progesterone ratio
Synthesis of prostaglandins
Release of oxytocin
Release of oxytocin
Which of the following cells during gametogenesis is normally dipoid?
Primary polar body
Spermatid
Spermatogonia
Spermatogonia
If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from
epididymis to vas deferens
ovary to uterus
vagina to uterus
vagina to uterus
The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for
escaping any possible compression by the visceral organs
providing more space for the growth of epididymis
Providing a secondary sexual feature for exhibiting the male sex
Providing a secondary sexual feature for exhibiting the male sex
he figures given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of A-F have been correctly identified.
C- Infundibulum, D -Fimbriae, E -cervix
D- oviducal funnel, E Uterus, F- cervix
A - Perimetrium, B - Myometrium, C -Fallopian tube
A - Perimetrium, B - Myometrium, C -Fallopian tube
Ureters act as urogenital ducts in
humans males
human females
frog's both males and females
frog's both males and females
In vitro fertilisation is a technique that involves the transfer of which one of the followings into the Fallopian tube?
Embryo only, up to 8 cells stage
Either zygote or early embryo up to 8 cell stage
Embryo of 32 cells stage
Embryo of 32 cells stage
Sertoli cells are found in
Ovaries and secrete progesterone
adrenal cortex and secrete adrenalin
seminiferous tubules and provide nutrition to germ cells
seminiferous tubules and provide nutrition to germ cells
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