Placenta is the region, where
foetus is supplied by maternal blood
foetus receives maternal blood and nutrition
embryo is enclosed by membranes
embryo is attached to mother by umbilical cord
Correct Answer :
B. foetus receives maternal blood and nutrition
Related Questions
The site of fertilization in the female mammalian reproductive system is
vagina
uterus
fallopian tube
ovarian fimbriae
One of these is polyestrous
Sheep
Bitches
Cows
Goats
The simplest type of placenta found in man is
Haemochorial
Epitheliochorial
Syndesmochorial
Haemo-endothelial
Graffian follicles are characteristically found in the
ovary of mammal
ovary of frog
testis of frog
testis of mammal
The female rabbit is
spontaneous ovulator
seasonal ovulator
induced ovulator
natural ovulator
In which of the animals, the fertilization occurs externally in water ?
Hydra
Earthworm
Frog
Cockroach
The gestation period of elephant is about
11 months
10 months
15 months
22 months
Amnion is an extra-embryonic embrane which develops during the embryonic development of
cockroach
lizard
toad
fish
In the human menstrual cycle, ovulation occurs around
day 10
day 14
day 8
day 22
Gubernaculun connects
testis to scrotum
ovary to the body wall in abdomen
the two muscles
the two bones
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
Amnion helps in
respiration
excretion
nutrition
protection from shocks
Gestation period in man is a about
10 weeks
28 weeks
32 weeks
35 weeks
The hormone which shows a single mid cycle peak in the human female is
FSH
LH
oestrogen
progesterone
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
Allantois of the mammalian embryo helps in
respiration
excretion
protection
nutrition
The gestation period of rabbit is
28 - 32 days
60 - 70 days
20 - 25 days
80 - 90 days
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 capsule enclosing testes of mammal is known as
tunica vasculosa
tunica albuginea
tunica vaginalis
none of these
In the testis of rabbit, the hormone secreting cells are
spermatogonia
spermatocytes
sustentacular cells
cells of Leydig
Placenta is the region, where
foetus is supplied by maternal blood
foetus receives maternal blood and nutrition
embryo is enclosed by membranes
embryo is attached to mother by umbilical cord
The bidder canals help to pass out
ova
sperms
bile
saliva
The testis are found in the abdomen in
kangaroo
elephant
rabbit
goat
The sperm count increases
if a person takes hot bath at 43 - 45°C for 30 minutes per day
if a person wears althletic supporters
during summer months
during winter months
Which of the following animals are hermaphrodites?
Tapeworm
Leech
Earthworm
All of these
The human sperm was first seen and described by
Hamm and Leeuwenhock
Spallazani
De Graff
VonBaer
The region where the sperm enters egg is called
equator
rseceptive cone
animal pole
vegetal pole
Secodary sexual character in man is
breast
thyroid
ovary
testis and ovaries
The placental barrier between animal and foetal blood is minimum
goat
cow
pig
man