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question_answer1)
During embryonic development, Grey crescent is the area :
A)
At the point of entry of sperm into ovum done
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B)
Just opposite to the site of entry of sperm into ovum done
clear
C)
At the animal pole done
clear
D)
At the vegetal pole done
clear
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question_answer2)
If mammalian ovum fails to get fertilized, which one of the following is unlikely?
A)
Corpus luteum will disintegrate done
clear
B)
Estrogen secretion further decreases done
clear
C)
Primary follicle starts developing done
clear
D)
Progesterone secretion rapidly declines done
clear
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question_answer3)
A cross section at the midpoint of the middle piece of a human sperm will show :
A)
Centriole, mitochondria and 9+2 arrangement of microtubules done
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B)
Centriole and mitochondria done
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C)
Mitochondria and 9+2 arrangement of microtubules done
clear
D)
9+2 arrangement of microtubules only done
clear
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question_answer4)
Which one of the following events is correctly matched with the time period in menstrual cycle?
A)
Release of egg : 5th day done
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B)
Endometrium regenerates : 5-10 days done
clear
C)
Endometrium secretes nutrients for implantation : 11-18 days done
clear
D)
Rise in progesterone level : 1-15 days done
clear
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question_answer5)
Sertoli cells are regulated by the pituitary hormone known as
A)
LH done
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B)
FSH done
clear
C)
GH done
clear
D)
Prolactin. done
clear
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question_answer6)
Given below is a diagrammatic sketch of a portion of human male reproductive system. Select the correct set of the names of the parts labelled as A, B, C and D.
A)
A - Ureter, B - Prostate, C - Seminal vesicle, D - Bulbourethral gland done
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B)
A - Vas deferens, B - Seminal vesicle, C - Prostate, D - Bulbourethral gland done
clear
C)
A - Vas deferens, B - Seminal vesicle, C - Bulbourethral gland, D - Prostate done
clear
D)
A - Ureter, B - Seminal vesicle, C - Prostate, D - Bulbourethral gland done
clear
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question_answer7)
Withdrawal of which of the following hormones is the immediate cause of menstruation?
A)
Estrogen done
clear
B)
FSH done
clear
C)
FSH-RH done
clear
D)
Progesterone. done
clear
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question_answer8)
Which part of ovary in mammals acts as an endocrine gland after ovulation?
A)
Stroma done
clear
B)
Germinal epithelium done
clear
C)
Vitelline membrane done
clear
D)
Graafian follicle. done
clear
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question_answer9)
In the human female, menstruation can be deferred by the administration of
A)
Combination of estrogen and progesterone done
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B)
FSH only done
clear
C)
Combination of FSH and LH done
clear
D)
LH only done
clear
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question_answer10)
In the human female, menstruation can be deferred by the administration of :
A)
FSH only done
clear
B)
LH only done
clear
C)
Combination of FSH and LH done
clear
D)
Combination of estrogens and progesterone done
clear
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question_answer11)
Which part of ovary in mammals acts as an endocrine gland after ovulation?
A)
Vitelline membrane done
clear
B)
Graafian follicle done
clear
C)
Stroma done
clear
D)
Germinal epithelium done
clear
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question_answer12)
In human adult females, oxytocin
A)
Stimulates pituitary to secrete vasopressin done
clear
B)
Causes strong uterine contractions during parturition done
clear
C)
Is secreted by anterior pituitary done
clear
D)
Stimulates growth of mammary glands. done
clear
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question_answer13)
Which one of the following statements is incorrect about menstruation?
A)
At menopause in the female, there is especially abrupt increase in gonadotropic hormones done
clear
B)
The beginning of the cycle of menstruation is called menarche done
clear
C)
During normal menstruation about 40 ml of blood is lost done
clear
D)
The menstrual fluid can easily clot. done
clear
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question_answer14)
Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?
A)
Yolk sac done
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B)
Amnion done
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C)
Chorion done
clear
D)
Allantois. done
clear
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question_answer15)
In humans, at the end of the first meiotic division, the male germ cells differentiate into the
A)
Spermatids done
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B)
Spermatogonia done
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C)
Secondary spermatocytes done
clear
D)
Primary spermatocytes. done
clear
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question_answer16)
Which one of the following statements is incorrect about menstruation?
A)
At menopause in the female, there is especially abrupt increase in gonadotropic hormones done
clear
B)
The beginning of the menstruation cycle is called menarche done
clear
C)
During normal menstruation about 100ml blood is lost done
clear
D)
The menstrual fluid can easily clot done
clear
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question_answer17)
Both corpus luteum and macula lutea are
A)
A source of hormone done
clear
B)
Found in human ovaries done
clear
C)
Characterised by a yellow colour done
clear
D)
Contributory in maintaining pregnancy. done
clear
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question_answer18)
Foetal ejection reflex in human female is induced by :
A)
Release of oxytocin from pituitary done
clear
B)
Pressure exerted by amniotic fluid done
clear
C)
Differentiation of mammary glands done
clear
D)
Fully developed foetus and placenta. done
clear
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question_answer19)
Which one of the following is the correct matching of the events occurring during menstrual period?
A)
Menstruation. Breakdown of myometrium and ovum not fertilised. done
clear
B)
Ovulation. LH and FSH attain peak level and sharp fall in the secretion of progesterone done
clear
C)
Proliferative Phase. Rapid regeneration of myometrium and maturation of Graafian follicle done
clear
D)
Development of Corpus Luteum - Secretory phase and increased secretion of progesterone. done
clear
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question_answer20)
Choose the correct one option from the following diagram of uterus with developing embryo.
A)
A - Chorionic villi \[\to \] forms placenta done
clear
B)
B - Yolk sac\[\to \] Prevents desiccation of embryo done
clear
C)
C - umbilical cord \[\to \] Haemopoiesis done
clear
D)
D - Blastocyst \[\to \] Forms the embyo done
clear
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question_answer21)
Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female ?
A)
Fertilisation of the ovum done
clear
B)
Maintenance of the hypertrophical endometrial lining done
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C)
Maintenance of high concentration of sex hormones in the blood stream done
clear
D)
Retention of well-developed corpus luteum. done
clear
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question_answer22)
The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is
A)
Spermatogonia - spermatid - spermatocyte - sperms done
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B)
Spermatocyte - Spermatogonia - spermatids - sperms done
clear
C)
Spermatogonia - spermatocyte - spermatid - sperms done
clear
D)
Spermatid - spermatocyte - Spermatogonia -sperms. done
clear
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question_answer23)
Which of the following hormones is secreted by implanted blastocyst, that acts on the corpus luteum in the ovary, stimulating the body to produce estrogens and progesterone to maintain the uterine lining?
A)
Estrogen done
clear
B)
HCG done
clear
C)
Progesterone done
clear
D)
Oxytocin done
clear
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question_answer24)
Among the following stem cells, which are found in the umbilical cord?
A)
Embryonic stem cells done
clear
B)
Adult stem cells done
clear
C)
Cord blood stem cells done
clear
D)
All of the above done
clear
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question_answer25)
Foetal ejection reflex in human female is induced by :
A)
Pressure exerted by amniotic fluid done
clear
B)
Release of oxytocin from pituitary done
clear
C)
Fully developed foetus and placenta done
clear
D)
Differentiation of mammary glands done
clear
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question_answer26)
Directions : (26 - 30) |
In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answerout of the following choices : |
|
Assertion: The testes are primary sex organs in human being. |
Reason: The testes help in the secretion of hormones as well as formation of sperms. |
A)
Assertion and reason both are correct statements and reason is the correct explanation for assertion. done
clear
B)
Assertion and reason both are correct statements but reason is not the correct explanation for assertion. done
clear
C)
Assertion is correct statement but reason is wrong statement. done
clear
D)
Assertion is wrong statement but reason is correct statement. done
clear
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question_answer27)
Assertion: Seminal vesicles are: a pair of sex glands between urinary bladder and rectum.
|
Reason: A pair of prostate gland is present around urethra of the male.
|
A)
Assertion and reason both are correct statements and reason is the correct explanation for assertion. done
clear
B)
Assertion and reason both are correct statements but reason is not the correct explanation for assertion. done
clear
C)
Assertion is correct statement but reason is wrong statement. done
clear
D)
Assertion is wrong statement but reason is correct statement. done
clear
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question_answer28)
Assertion: Oviduct is the seat of implantation in human female.
|
Reason: Ostium is the opening of infundibulum surrounded by fimbrae.
|
A)
Assertion and reason both are correct statements and reason is the correct explanation for assertion. done
clear
B)
Assertion and reason both are correct statements but reason is not the correct explanation for assertion. done
clear
C)
Assertion is correct statement but reason is wrong statement. done
clear
D)
Assertion is wrong statement but reason is correct statement. done
clear
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question_answer29)
Assertion: Sperm formation from Spermatogonia is called spermatogenesis.
|
Reason: Spermiogenesis is the formation of sperm from the spermatid.
|
A)
Assertion and reason both are correct statements and reason is the correct explanation for assertion. done
clear
B)
Assertion and reason both are correct statements but reason is not the correct explanation for assertion. done
clear
C)
Assertion is correct statement but reason is wrong statement. done
clear
D)
Assertion is wrong statement but reason is correct statement. done
clear
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question_answer30)
Assertion: Formation of gastrula from the blastula is gastrulation.
|
Reason: Archenteron is the cavity of gastrula.
|
A)
Assertion and reason both are correct statements and reason is the correct explanation for assertion. done
clear
B)
Assertion and reason both are correct statements but reason is not the correct explanation for assertion. done
clear
C)
Assertion is correct statement but reason is wrong statement. done
clear
D)
Assertion is wrong statement but reason is correct statement. done
clear
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question_answer31)
Directions : (31 - 35) |
Read the passage given below and answer the following questions. |
The sex of the baby has been decided at the stage of fertilization. The chromosome pattern in the human female is XX and that in the male is XY. Therefore, all the haploid gametes produced by the female, i.e. ova have the sex chromosome X whereas in the male gametes or sperms the sex chromosome could be either X or Y, hence 50 per cent of sperms carry the X chromosome, i.e. gymnosperm while the other 50 per cent carry the Y, i.e. androsperm. After fusion of the male and female gametes the zygote would carry either XX or XY depending on whether the sperm carrying X or Y ferilised the ovum. The zygote carrying XX would develop into a female baby and XY would form a vole. That is why scientifically it is correct to say that the sex of the baby is determined by the father and not by the mother. |
Sex of the baby is decided at. The
A)
Stage of spermatogenesis done
clear
B)
Stage of oogenesis done
clear
C)
Stage of fertilization done
clear
D)
Stage of implantation done
clear
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question_answer32)
Chromosome set up of androsperm is
A)
44 X done
clear
B)
22 X done
clear
C)
44 Y done
clear
D)
22 Y done
clear
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question_answer33)
Chromosome set up of gynosperm is
A)
44 X done
clear
B)
22 X done
clear
C)
44 Y done
clear
D)
22 Y done
clear
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question_answer34)
Ratio of gynosperm and androsperm in human semen is
A)
25 : 75 done
clear
B)
40 : 60 done
clear
C)
50 : 50 done
clear
D)
30 : 70 done
clear
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question_answer35)
Zygote developing into a female baby has which of the/following set of chromosomes :
A)
22 XX done
clear
B)
44 XX done
clear
C)
22 XY done
clear
D)
44 XY done
clear
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