Embryo of a mammal is surrounded by
yolk
amniotfe fluid
both
none of these
Correct Answer :
B. amniotfe fluid
Related Questions
The process of spermatogenesis in human testis is completed in
74 days
90 days
56 days
32 days
The structure that attaches testis to dorsal body wall is
tunica albuginea
scrotal sac
mesorchium
gubernaculum
The structure formed after release of ova from Graffian follicles and secretory in nature, is
corpus callosum
corpus luteum
corpus albicans
corpus striatum
One of the following accessory glands in the male reproductive system produces secretions that neutralise the acidity in the urethra and in the female genital tract. This is necessary for survival of sperms. This fluid is secreted by
seminal vesicle
prostrate gland
cowper's gland
coagulating gland
Cryptorchidism is a condition in which testes are
surgically removed
not developed in foetus
unable to produce sperms
unable to descend into scrotal sacs
The placental barrier between animal and foetal blood is minimum
goat
cow
pig
man
The site of fertilization in the female mammalian reproductive system is
vagina
uterus
fallopian tube
ovarian fimbriae
Clitoris in mammals is
homologous to penis
analogous to penis
functional penis in female
non-functional penis in male
Amnion is an extra-embryonic embrane which develops during the embryonic development of
cockroach
lizard
toad
fish
In which of the animals, the fertilization occurs externally in water ?
Hydra
Earthworm
Frog
Cockroach
The capsule enclosing testes of mammal is known as
tunica vasculosa
tunica albuginea
tunica vaginalis
none of these
The simplest type of placenta found in man is
Haemochorial
Epitheliochorial
Syndesmochorial
Haemo-endothelial
Secodary sexual character in man is
breast
thyroid
ovary
testis and ovaries
The gestation period of elephant is about
11 months
10 months
15 months
22 months
Gestation period in man is a about
10 weeks
28 weeks
32 weeks
35 weeks
Embryo of a mammal is surrounded by
yolk
amniotfe fluid
both
none of these
The structure of the male reproductive system that corresponds to oviduct of the female system is
seminiferous tubules
epididymis
vas deferens
urethra
Allantois of the mammalian embryo helps in
respiration
excretion
protection
nutrition
The seminal vesicle in rabbit is found at the junction of
prostrate and Cowper's glands
porstrate and vasa deferens
prostrate and urethra
vasa deferens and testis
bartholine glands are found and associated with
female reproductive organs of cockroach
male reproductive organs of earthworm
male reproductive organs of rabbit
female reproductive organs of rabbit
Rupturing of follicles and discharge of ova is known as
copulation
ovulation
oviposition
conjugation
The testes secrete a group of hormones called
progestogens
androgens
estrogens
tropic hormones
The human sperm was first seen and described by
Hamm and Leeuwenhock
Spallazani
De Graff
VonBaer
The part of reproductive system in male which neither produces hormones nor sperms is
seminal vesicles
cowper's glands
prostrate glands
all of these
The testis are found in the abdomen in
kangaroo
elephant
rabbit
goat
In rabbit, the sperms are stored and nourished in
testes
vasa deferentia
epidydymis
spermatic cord
A woman's fertility ceases at about 49-55 years. This is known as
gestation
menstruation
puberty
menopause
Those person in which testes does not descend into scrotal sac
show normal secondary sexual characters as the Leydig cells are unaffected
are normal in every respect except that they lack ability to procreate
the testes are comparatively smaller in size
all of these
Amnion helps in
respiration
excretion
nutrition
protection from shocks
The female rabbit is
spontaneous ovulator
seasonal ovulator
induced ovulator
natural ovulator