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1301.

Cessation of menstrual cycle is termed :A. menearcheB. menopauseC. impotencyD. none of these

Answer» Correct Answer - b
1302.

Cessation fo menstrual cycle in a woman is calledA. OvulationB. PubertyC. MenopauseD. Implantation.

Answer» Correct Answer - C
1303.

Choose the incorrect statement from the followingA. In birds and mammals internal fertilisation takes place.B. Colostrum contains antibodies and nutrients.C. Polyspermy in mammals is prevented by the chemical changes in the egg surface.D. In the human female, implantation occurs almost seven days after fertilisation.

Answer» Correct Answer - C
1304.

Refer to the given graph representing interplay of different hormones (A-D) during menstrual cycle in women and answer the question that follow. Which hormones are excreted in urine after menopause?A. AB. BC. CD. Both b and c

Answer» Correct Answer - D
B and C represent FSH and LH. They are excreted in urine after menopause. At about age of 45 years, the production of estrogen by the ovaries decreases as the number of priomordial follicles approaches zero. When estrogen production falls below a critical value. the estrogen can no longer inhibit the production of the gonadotropins (FSH and LH). Instead, the gonadotropins FSH and LH (mainly FSH) are produced after menopause in large and continous quantities. The same are then excreted in urine.
1305.

Ovulation in females is under the control of:A. LTHB. ADH and LHC. FSH and LHD. LTH and TSH

Answer» Correct Answer - c
1306.

Cessation of menstrual cycle in women is calledA. menopauseB. lactationC. ovulationD. parturition

Answer» Correct Answer - A
1307.

During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is calledA. anamorphosisB. pattern formationC. organiser phenomenaD. axis formation

Answer» Correct Answer - D
(d) Embyonic axis are formed very early in development and sometimes bt the polarity of the egg.
1308.

Refer to the given graph representing interplay of different hormones (A-D) during menstrual cycle in women and answer the question that follow. Which hormones is most effective in producing uterine changes during menstrual cycle?A. AB. BC. CD. D

Answer» Correct Answer - D
D represents hormone progesterone. Its function is to promote secretory changes in the uterine endometrium during the latter half of the monthly female sexual cycle, thus preparing the uterus for implantation of the fertilised ovum.
1309.

Gray crescent is the areaA. at the point of entry of sperm into ovumB. just opposite to the site of entry of sperm into ovumeC. at the animal poleD. at the vegetal pole

Answer» Correct Answer - B
(b) The gray crescent area is the area just opposite to the entry of sperm into ovum.
1310.

In 28 days human ovarian cycle, ovulation occurs onA. Day 1B. Day 5C. Day 14D. Day 28

Answer» (C ) In 28 day human ovarian cycle, ovulation occurs on day 14 (mid-cycle).
1311.

Ovulation takes place in/on:A. ovaryB. about the 14th dayC. Both (a) and (b)D. none of these

Answer» Correct Answer - c
1312.

`1^(st)` polar body is formed at which stage of oogenesis?A. `1^(st)` meiosisB. `2^(nd)` mitosisC. `1^(st)` mitosisD. Differentiation

Answer» Correct Answer - A
During maturation phase of oogenesis, primary oocyte undergoes first meiotic division and form two haploid daughter cells, large secondary oocyte and small first polar body.
1313.

Ovulation in the human female normally takes place during the menstrual cycleA. at the mind seceretory phaseB. just before the end of the secretory phaseC. at the beginning of the proliferative phaseD. at the end of the proliferative phase

Answer» Correct Answer - D
(d) Ovulation takes place under under the influence of LH and FSH. It normally takes place at the end of proliferative i.e., `14^(th)` day or mid way during menstrual cycle. The LH surge stimulates completion of reduction division of oocyte. Following ovulation, the Graafian follicle changes to corpus luteum.
1314.

Shortest phase in the menstrual cycle of women isA. mensesB. luteal phaseC. follicular phaseD. ovulatory phase

Answer» Correct Answer - d
1315.

Ovulation in the human female normally takes place during the menstrual cycleA. at the mid scretory phaseB. just before the end of the secretory phaseC. at the beginning of the proliferative phaseD. at the end of the proliferative phase.

Answer» Correct Answer - D
Prliferative phase includes day 6-13 of cycle and ovulation occurs on day 14
1316.

In the 28 days human ovarian cycle, the ovulation takes place typically onA. 1 st dayB. 5th dayC. 14th dayD. 28th day

Answer» Correct Answer - c
1317.

Which extra-embryonic membrane in human prvents desiccation of the embryo inside the uterus?A. yolk sacB. amnionC. chorionD. allantois

Answer» Correct Answer - b
1318.

In human females, the ovarian cycle begains when the:A. levels of estrogen reach their maximumB. levels of progesterone drops percipitouslyC. hypothalamus increases its release of FSH and LHD. hypothalamus stimulates the anterior pituitary to increase its output of FSH and LH

Answer» Correct Answer - b
1319.

What is the total number of polar bodies formed during oogenesis in the ovary?A. 4B. 3C. 1D. 2

Answer» Correct Answer - B
(B) Three polar bodies formed during oogenesis in the ovary.
1320.

Ovulation in the human female normally takes place during the menstrual cycleA. At the mid secretory phaseB. Just before the end of the secretory phaseC. At the beginning of the proliferative phaseD. At the end of the proliferative phase

Answer» Correct Answer - D
1321.

In the fertile human female , approximately on which day of the menstrual cycle (32 days ) does ovulation take place ?A. Day 18B. Day 14C. Day 1D. Day 8

Answer» Correct Answer - A
1322.

Ovulation in the human female normally takes place during the menstrual cycleA. at the mid secretory phaseB. at the end of the proliferative phaseC. just before the end of secretory phaseD. at the begaining of the proliferative phase

Answer» Correct Answer - b
1323.

The time of optimum chances of conception in a woman is_______starting from the day of menstruationA. 1 st dayB. 4th dayC. 14th dayD. 26th day

Answer» Correct Answer - c
1324.

In the fertile human female approximately on which day of the menstrual cycle does ovulation take place ?A. Day 14B. Day 18C. Day 1D. Day 8

Answer» Correct Answer - A
1325.

Onset of menstrual cycle in female anthrapoid primates isA. PubertyB. MenarcheC. MenopauseD. Menstruation

Answer» Correct Answer - B
1326.

Menstrual cycle is characteristic of all femaleA. Man, apes and monkeysB. MammalsC. PrimatesD. Both A and C

Answer» Correct Answer - D
(D) The reproductive cycle in the female primates (e.g.: monkeys, apes and human beings ) is called menstrual cycle.
1327.

The cycle of events starting from one menstruation till the next one is calledA. PregnancyB. ParturitionC. ImplantationD. Menstrual cycle

Answer» Correct Answer - D
(D) The cycle of events starting from one menstruation till the next one is called menstrual cycle.
1328.

Why doctors recommend breast feeding during initial period of infant growth?

Answer» The milk produced during the initial few days of lactaion is called colostrum which contains several antibodies (especially 1gA) essential to develop resistance in the new-born babies against diseases. Breast-feeding during the initial period of infant growth is recommended by doctors for bringing up a healthy baby.
1329.

The difference between spermiogenesis and spermiation isA. In spermiogenesis spematids are formed while in spermiation spermatozoa are formed.B. In spermiogenesis spermatozoa are formed while in spermiation spermatids are formed.C. In supermiogenesis spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed.D. In spermiogenesis spermatozoa are formed while in spermiation spermatozoa are released from sertoli cells into cavity of seminiferous tubules.

Answer» Correct Answer - D
(D) In spermiogenesis, spermatozoa are formed while in spermiation, spermatozoa are released from sertoli cells into the cavity of seminiferous tubules.
1330.

Given below are assertion and reason. Point out if both re true with reason being correct explanation (A). Both are true but reason is not correct explanation (B), assertion is true but reason is wrong (C ) and bothare wrong (D). Assertion . In humans the gamete contributed by the male determines whether the child produced will be male or female. Reason. Sex in humans is polygenic trait dependent upon the com ulative effect of some genes on X-chromosome and some on Y-chromosome.A. AB. BC. CD. D

Answer» Correct Answer - C
1331.

Grey crescen t is the areaA. At the point of entry of sperm into ovumB. At the animal poleC. Just oppsoite the site of entry of sprms into ovumD. At the vegetal pole.

Answer» Correct Answer - C
1332.

Grey creascent develops inA. Eye of FrogB. Fertilised egg of FrogC. Brain of RabbitD. Eye of Cockroach.

Answer» Correct Answer - B
1333.

Mass separation of cells in embryo isA. EmbolyB. InvolutionC. DelaminationD. Epiboly.

Answer» Correct Answer - C
1334.

In deuterostomes second opening formsA. AnusB. MouthC. NoseD. Both A and B

Answer» Correct Answer - B
(B) In deuterostomes, second opening forms mouth.
1335.

What is true of deuterostomes?A. Presence of schizocoelB. Non-formation of anus from blastopore.C. Coelom lined by mesoderm on both sidesD. Absence of false coelom

Answer» Correct Answer - D
1336.

What is true of deuterostomes?A. Presence of schizocoelB. Nonformation of anus from blastoporeC. Coelum lined by mesoderm on both sidesD. Absence of false coelom.

Answer» Correct Answer - D
1337.

In deuterostomes second opening formsA. AnusB. MouthC. NoseD. Bo th A and B

Answer» Correct Answer - B
1338.

Cavity of gastrula isA. CoelomB. BlastocoelC. ArchenteronD. Chorion.

Answer» Correct Answer - C
1339.

Cavity of gastrula isA. CoelomB. BlastocoelC. ArchenteronD. Chorion

Answer» Correct Answer - C
(C ) Cavity of gastrula is archenteron.
1340.

Location of Leydig cells and their secreations are:A. Liver-cholesterolB. Ovary-estrogenC. Testis-testosterone/and rogensD. Pancreas-glucagon.

Answer» Correct Answer - C
1341.

The structural and functional unit between developing embryo (foetus) and maternal body is calledA. ParturitionB. Umbilical cordC. PlacentaD. Chorionic villi

Answer» Correct Answer - C
(C ) The structural and functional unit between developing embryo (foetus) and maternal body is called placenta.
1342.

The rate of active movement of sperms isA. 1.5-3.0cm/minB. 1.5-3.0mm/minC. 1.5-3.0m/minD. 1.5-3.0m/hr.

Answer» Correct Answer - B
1343.

Foetus developing in the genital tract without getting nourishment from the mother is a case ofA. ViviparyB. OviparyC. Ovo-viviaryD. None of the above.

Answer» Correct Answer - C
1344.

Sperm s move actively in female genital tract byA. CreepingB. GlidingC. SwimmingD. Jet propulsion.

Answer» Correct Answer - C
1345.

Nereis hasA. StereoblastulaB. DiscoblastulaC. CoeloblastulaD. Superficial blastula.

Answer» Correct Answer - A
1346.

The process of formation of ova is calledA. OvulationB. OogenesisC. OviparityD. Oviposition.

Answer» Correct Answer - B
1347.

Human female reaches menopause at the age of aboutA. 25 yearsB. 35 yearsC. 50 yearsD. 70 years

Answer» Correct Answer - C
(C ) Human female reaches menopause at the age of about 50 years.
1348.

The process of formation of ova is calledA. OvulationB. OogenesisC. OviparityD. Oviposition

Answer» Correct Answer - B
(C ) The process of formation of ova is called oogenesis.
1349.

Distingeration of corpus luteum occurs due to inhibiton of secretion of hormoneA. LTHB. FSHC. ProgesteroneD. LH.

Answer» Correct Answer - D
1350.

When egg is not fertilised , yellow colou red corpus luteum degenerates to formA. Corpus albicansB. Corpus callosumC. Corppora bigeminaD. Corpora quadrigenmins.

Answer» Correct Answer - A