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What is the correct answer?

4

Fertilizers are substances emitted from

A. mature eggs

B. immature eggs

C. sperms

D. polar body

Correct Answer :

A. mature eggs


Related Questions

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The female rabbit is

A. spontaneous ovulator

B. seasonal ovulator

C. induced ovulator

D. natural ovulator

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The gestation period of elephant is about

A. 11 months

B. 10 months

C. 15 months

D. 22 months

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One of these is polyestrous

A. Sheep

B. Bitches

C. Cows

D. Goats

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Sustentacular cells are found in

A. testis of mammals

B. testis of Ascaris

C. ovary of mammals

D. pancreas of frog

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In the human menstrual cycle, ovulation occurs around

A. day 10

B. day 14

C. day 8

D. day 22

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The site of fertilization in the female mammalian reproductive system is

A. vagina

B. uterus

C. fallopian tube

D. ovarian fimbriae

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The placental barrier between animal and foetal blood is minimum

A. goat

B. cow

C. pig

D. man

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The region where the sperm enters egg is called

A. equator

B. rseceptive cone

C. animal pole

D. vegetal pole

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A woman's fertility ceases at about 49-55 years. This is known as

A. gestation

B. menstruation

C. puberty

D. menopause

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Clitoris in mammals is

A. homologous to penis

B. analogous to penis

C. functional penis in female

D. non-functional penis in male

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The structure formed after release of ova from Graffian follicles and secretory in nature, is

A. corpus callosum

B. corpus luteum

C. corpus albicans

D. corpus striatum

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Placenta is the region, where

A. foetus is supplied by maternal blood

B. foetus receives maternal blood and nutrition

C. embryo is enclosed by membranes

D. embryo is attached to mother by umbilical cord

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After a sperm has entered an ovum in the process of fertilization, entry of further sperms is prevented by

A. development of the vitelline membrane

B. development of the pigment coat

C. condensation of yolk

D. formation of fertilization membrane

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In the testis of rabbit, the hormone secreting cells are

A. spermatogonia

B. spermatocytes

C. sustentacular cells

D. cells of Leydig

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In the male rabbit, the testes are located in

A. thoracic cavity

B. pericardial cavity

C. abdominal cavity

D. extra-abdominal scrotal cavity

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The human sperm was first seen and described by

A. Hamm and Leeuwenhock

B. Spallazani

C. De Graff

D. VonBaer

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The bidder canals help to pass out

A. ova

B. sperms

C. bile

D. saliva

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The capsule enclosing testes of mammal is known as

A. tunica vasculosa

B. tunica albuginea

C. tunica vaginalis

D. none of these

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The process of spermatogenesis in human testis is completed in

A. 74 days

B. 90 days

C. 56 days

D. 32 days

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The simplest type of placenta found in man is

A. Haemochorial

B. Epitheliochorial

C. Syndesmochorial

D. Haemo-endothelial

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Cells of Sertoli are found in

A. testis of rabbit

B. testis of cockroach

C. testis of frog

D. liver of mammals

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One of the following accessory glands in the male reproductive system produces secretions that neutralise the acidity in the urethra and in the female genital tract. This is necessary for survival of sperms. This fluid is secreted by

A. seminal vesicle

B. prostrate gland

C. cowper's gland

D. coagulating gland

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The testes secrete a group of hormones called

A. progestogens

B. androgens

C. estrogens

D. tropic hormones

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Embryo of a mammal is surrounded by

A. yolk

B. amniotfe fluid

C. both

D. none of these

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Gestation period in man is a about

A. 10 weeks

B. 28 weeks

C. 32 weeks

D. 35 weeks

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Amnion is an extra-embryonic embrane which develops during the embryonic development of

A. cockroach

B. lizard

C. toad

D. fish

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Secodary sexual character in man is

A. breast

B. thyroid

C. ovary

D. testis and ovaries

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Fertilizers are substances emitted from

A. mature eggs

B. immature eggs

C. sperms

D. polar body

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4

The testis are found in the abdomen in

A. kangaroo

B. elephant

C. rabbit

D. goat

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In which of the animals, the fertilization occurs externally in water ?

A. Hydra

B. Earthworm

C. Frog

D. Cockroach