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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