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4

The chemical of the ovum that attracts and holds sperm

A. Fertilizin

B. Antifertilizin

C. Agglutin

D. Antiagglutinin

Correct Answer :

A. Fertilizin


Related Questions

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4

Which of the following is not a hereditary disease?

A. Cystic fibrosis

B. Thalassaemia

C. Haemophilia

D. Cretinism

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4

Correct sequence in embryonic development is ..

A. Fertilization -> zygote -> cleavage -> morula -> blastula -> gastrula

B. Fertilization -> zygote -> cleavage -> blastula -> morula -> gastrula

C. Fertilization -> zygote -> cleavage -> morula -> blastula -> gastrula

D. Fertilization -> zygote -> gastrulae -> morula -> blastula -> cleavage

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4

The number and appearance of chromosomes in the nucleus of a eukaryotic cell is called as

A. Karyotype

B. Genotype

C. Phenotype

D. Cytogenetics

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What happens during fertilization when many sperms reach close to ovum ....

A. Cells of corona radiata trap all the sperm except one

B. Only two sperms nearest to ovum penetrate zona pellucida

C. Secretion of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida

D. All sperms except the one nearest to ovum lose their tails

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Corpus luteum secretes

A. Lh

B. Estrogen

C. Progesterone

D. Fsh

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After fertilization, implantation of human embryo takes place on

A. 10 th day

B. 14 th day

C. 7 th day

D. 3 rd day

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Erythroblastosis foetalis is caused by fertilization between the gametes of

A. Rh -ve female and rh+ ve male

B. Rh+ ve female and rh -ve male

C. Rh+ ve female and rh+ ve male

D. Rh~ ve female and rh -ve male

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4

Sertoli cells are found in

A. Seminiferous tubules

B. Ovaries

C. Prostate gland

D. Semen

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4

Amniotic fluid protects the foetus from ...

A. Shock

B. Abortion

C. Degeneration

D. Disease

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4

Normal sperm count is

A. 40 to 300 million per ml

B. 10 to 20 million per ml

C. < 10 million per ml

D. 200 million per ml

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Failure of the brain to grow in the foetus may result in:

A. Plagiocephaly

B. Craniostenosis

C. Anencephaly

D. Microcephaly

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4

Albinism is a congenital disorder resulting from the lack of which enzyme?

A. Tyrosinase

B. Xanthine oxidase

C. Catalase

D. Fructokinase.

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4

Cell division that occurs in zygote is called

A. meiosis

B. Mitosis

C. Cleavage

D. Differentiation

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Highly sophisticated procedure of injecting sperm directly into the ovum is

A. GIFT

B. ZIFT

C. ICSI

D. IUI

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The most important region of the decidua for the nourishment of the conceptus is the deciduas

A. Frondosum

B. Capsularis

C. Parietalis

D. Basalis

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Which one takes part in formation of placenta? ...

A. Only trophoblast

B. Only allantois

C. Trophoblast and mesoderm

D. Trophoblast and mesoderm and allantois

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4

Medical termination of pregnancy is safe till how many weeks of pregnancy?

A. 10 weeks

B. 12 weeks

C. 20 weeks

D. 22 weeks

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Fertilization is fusion of ..

A. Diploid spermatozoan with diploid ovum to form diploid zygote

B. Haploid spermatozoan with diploid ovum to form diploid zygote

C. Diploid spermatozoan with haploid ovum to form diploid zygote

D. Haploid spermatozoan with haploid ovum to form diploid zygote

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4

The rate of active movement of sperm is ...

A. 1.5 -3.0 mm/min

B. 1.5 - 3.0 cm/min

C. 1.5 -3.0 m/min

D. 1.5 -3.0 m/hr

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4

Cri-du-chat syndrome in humans is caused by the

A. Trisomy of 21st chromosome

B. Fertilization of an xx egg by a normal y-bearing sperm

C. Loss of half of the short arm of chromosome 5

D. Loss of half of the long arm of chromosome 5

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4

A child's blood group is 'o'. The parent's blood groups cannot be

A. A AND B

B. A AND A

C. AB AND O

D. B AND O

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4

Epididymis is ...

A. A long coiled tube between vasa efferentia and vas deferens

B. Network of sinuses between seminiferous tubules and efferentia

C. Connection between vas deferens and seminal vesicle

D. Intermediate structure between the testis and vasa efferentia

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4

In a semen analysis, the following is not acceptable as normal�

A. 25 % abnormal forms

B. 60% motility after 3 hours

C. Mild Alkaline reaction

D. Sperm count of 17 million per ml.

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4

Secretion of testosterone is stimulated by

A. FSH

B. TSH

C. ICSH

D. ACTH

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Layers of ovum from outside to inside are .

A. Corona radiata, zona pellucida, vitelline membrane

B. Zona pellucida, corona radiata, vitelline membrane

C. Vitelline membrane, zona pellucida, corona radiata

D. Zona pellucida, vitelline membrane, corona radiate

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The functional unit of testis of man is ...

A. Uriniferous tubules

B. Malpighian tubules

C. Seminiferous tubules

D. Acini or lobules

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4

Human embryo is enclosed by a sac called

A. Scrotum

B. Ericardium

C. Placenta

D. Amniotic sac

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In humans female ovulation occurs during menstrual cycle

A. At the end of proliferative phase

B. At the beginning of proliferative phase

C. Before the end of secretary phase

D. In the middle of secretary phase

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Menstrual phase is followed by .

A. Luteal phase

B. Follicular phase

C. Fertilization

D. Implantation

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Cu ions released from copper-releasing intra uterine devices (iuds)

A. Prevent ovulation

B. Suppress sperm motility

C. Prevents implantation of embryo

D. Kills sperms