Allantois of the mammalian embryo helps in
respiration
excretion
protection
nutrition
Correct Answer :
D. nutrition
Related Questions
The structure formed after release of ova from Graffian follicles and secretory in nature, is
corpus callosum
corpus luteum
corpus albicans
corpus striatum
Gestation period in man is a about
10 weeks
28 weeks
32 weeks
35 weeks
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
Amniotic fluid protects the foetus from
degeneration
encystment
jerks
none of these
Graffian follicles are characteristically found in the
ovary of mammal
ovary of frog
testis of frog
testis of mammal
The site of fertilization in the female mammalian reproductive system is
vagina
uterus
fallopian tube
ovarian fimbriae
In the male rabbit, the testes are located in
thoracic cavity
pericardial cavity
abdominal cavity
extra-abdominal scrotal cavity
Sustentacular cells are found in
testis of mammals
testis of Ascaris
ovary of mammals
pancreas of frog
Sertoli cells are located in
caput epididymis
cauda epididymis
seminiferous tubules
germinal epithelium
The capsule enclosing testes of mammal is known as
tunica vasculosa
tunica albuginea
tunica vaginalis
none of these
Fertilizers are substances emitted from
mature eggs
immature eggs
sperms
polar body
Which of the following animals are hermaphrodites?
Tapeworm
Leech
Earthworm
All of these
Rupturing of follicles and discharge of ova is known as
copulation
ovulation
oviposition
conjugation
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
The female rabbit is
spontaneous ovulator
seasonal ovulator
induced ovulator
natural ovulator
The placental barrier between animal and foetal blood is minimum
goat
cow
pig
man
Cryptorchidism is a condition in which testes are
surgically removed
not developed in foetus
unable to produce sperms
unable to descend into scrotal sacs
Cells of Sertoli are found in
testis of rabbit
testis of cockroach
testis of frog
liver of mammals
Embryo of a mammal is surrounded by
yolk
amniotfe fluid
both
none of these
Gubernaculun connects
testis to scrotum
ovary to the body wall in abdomen
the two muscles
the two bones
The hormone which shows a single mid cycle peak in the human female is
FSH
LH
oestrogen
progesterone
In which of the animals, the fertilization occurs externally in water ?
Hydra
Earthworm
Frog
Cockroach
One of these is polyestrous
Sheep
Bitches
Cows
Goats
The testis are found in the abdomen in
kangaroo
elephant
rabbit
goat
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
The human sperm was first seen and described by
Hamm and Leeuwenhock
Spallazani
De Graff
VonBaer
The gestation period of elephant is about
11 months
10 months
15 months
22 months
The gestation period of rabbit is
28 - 32 days
60 - 70 days
20 - 25 days
80 - 90 days
The structure that attaches testis to dorsal body wall is
tunica albuginea
scrotal sac
mesorchium
gubernaculum
The part of reproductive system in male which neither produces hormones nor sperms is
seminal vesicles
cowper's glands
prostrate glands
all of these