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Index
 »Â
human reproduction
 »Â
Chapter 1
 »Â
ALLEN exercise
level: ALLEN exercise
Questions and Answers List
level questions: ALLEN exercise
Question
Answer
in human adult females oxytocin
causes strong uterine contractions uring parturition
which of the following is responsible for division of fertilized egg
proximal centriole of sperm
during fertilization, intermixing of chromosome of male and female gametes is called
amphimixis
soluble inorganic and organic nutrient materials, hormones, antibodies, against diptheria, smallpox, scarlet fever, measles etc. can pass from the mother to the foetus, so we can say that placenta act as a
ultra filter
the fertilization cone that pulls the sperm into the egg is formed from the
plasma membrane of the egg
the pregnancy test is based on detection of which hormone
hCG
how many eggs and spearms are required to produce fraternal twins
two eggs, two sperms
the corpus luteam is maintained for the first 8 weeks of pregnancy by
hCG
how many minimum meiotic divisions are essential for the formation of 120 zygotes in human
150
which of the choices below is a function of the vagina
serves as a passageway for menstrual flow, receives semen from the penis during sexual intercourse and is a birth canal
'p' cells start division during foetal development and enter into 'Q' of meiotic division and get temporarily arrested at this stage, called 'R'. identify P, Q and R w.r.t. oogenesis
P-oogonia, Q-prophase-1, R-primary oocyte
in human, the placenta is formed from the_____ of the embryo and______ of the mother
chorion, endometrium
labia majora is homologous to
scrotum
which of the following layer of uterine wall undergoes changes during menstrual cycle?
endometrium
primary oocyte surrounded by a layer of granulosa cells is called
primary follicle
in humans, at the end of the first meiotic division, the male germ cells differentiate into the
secondary spermatocytes
accessory sexual character in female is promoted by
estrogen
the human sperm was first seen by
hamm and leeuwenhoek
which one holds corona radiata
mucopolysaccharide
prostate gland is a
semen secreting accessory gland of male
a common scent producing gland among mammals is
anal gland
the cavity, which is formed during gastrulation is named as
archenteron
which layer develops first during embryonic development
endoderm
in gastrulation, which is (are) formed
ectoderm,mesoderm,endoderm
how many sperms are formed by one primary spermatocyte
4
ovulation in the human female normally takes place during the menstrual cycle
at the end of the proliferative phase
the animal in which testes descent into scrotom only during breeding season
bat
in uterus, endometrium, proliferates in response to
oestrogen
in mesolecithal eggs, the cleavage is
unequal holoblastic
which part of the spermatid forms acrosome of sperm
golgi body
the egg of frog is
telolecithal
antifertilizin is present on
spermatozoa
various changes in mammalian sperm which prepare it to fertilise the ovum are called
capacitation
phase of menstrual cycle in human that lasts for 7-8 days is
proliferative phase
what is true for cleavage
size of cells decrease
at which stage of spermatogenesis, sperms aquire their whole structural maturity and they contain a haploid nucleus and other organelles
spermiogenesis
insect's eggs are
megalecithal and centrolecithal
which of the following is not the point correct for gastrulation
some blastomeres and blastocoel degenerate
in human foetus,the heart begins to beat at development age of
4 weeks
fixing up of the blastocyst in the wall of the uterus is known as
implantation
archenteron cavity is found
in gastrula
partution duct in female is called
vagina
phase of menstrual cycle when ovulation occurs in
proliferate
in mammals the estrogens are secreted by the graafian follicle from its
internal theca
non-cledoic eggs occur in
fish
testes descent into scrotum in mammals for
spermatogenesis
which have macrolecithal eggs
aves, reptilia
cleidoic egg is an adaptation for
terrestial life
in mammals eggs are microlecithal and isolecithal because there are mostly
viviparous
eggs of birds are
megalecithal