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

A. Hydra

B. Earthworm

C. Frog

D. Cockroach

Correct Answer :

C. Frog


Related Questions

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4

The simplest type of placenta found in man is

A. Haemochorial

B. Epitheliochorial

C. Syndesmochorial

D. Haemo-endothelial

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4

Sertoli cells are located in

A. caput epididymis

B. cauda epididymis

C. seminiferous tubules

D. germinal epithelium

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4

The gestation period of rabbit is

A. 28 - 32 days

B. 60 - 70 days

C. 20 - 25 days

D. 80 - 90 days

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4

Rupturing of follicles and discharge of ova is known as

A. copulation

B. ovulation

C. oviposition

D. conjugation

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4

Failure of descending testis into the scrotum is known as

A. paedogenes

B. castration

C. cryptorchidism

D. impotency

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4

Which of the following animals are hermaphrodites?

A. Tapeworm

B. Leech

C. Earthworm

D. All of these

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4

The sperm count increases

A. if a person takes hot bath at 43 - 45°C for 30 minutes per day

B. if a person wears althletic supporters

C. during summer months

D. during winter months

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4

In rabbit, the sperms are stored and nourished in

A. testes

B. vasa deferentia

C. epidydymis

D. spermatic cord

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4

The hormone which shows a single mid cycle peak in the human female is

A. FSH

B. LH

C. oestrogen

D. progesterone

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4

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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4

The testes secrete a group of hormones called

A. progestogens

B. androgens

C. estrogens

D. tropic hormones

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4

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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4

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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4

The structure of the male reproductive system that corresponds to oviduct of the female system is

A. seminiferous tubules

B. epididymis

C. vas deferens

D. urethra

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4

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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4

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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4

In the human menstrual cycle, ovulation occurs around

A. day 10

B. day 14

C. day 8

D. day 22

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4

Amniotic fluid protects the foetus from

A. degeneration

B. encystment

C. jerks

D. none of these

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4

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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4

The seminal vesicle in rabbit is found at the junction of

A. prostrate and Cowper's glands

B. porstrate and vasa deferens

C. prostrate and urethra

D. vasa deferens and testis

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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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4

One of these is polyestrous

A. Sheep

B. Bitches

C. Cows

D. Goats

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4

Those person in which testes does not descend into scrotal sac

A. show normal secondary sexual characters as the Leydig cells are unaffected

B. are normal in every respect except that they lack ability to procreate

C. the testes are comparatively smaller in size

D. all of these

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4

The human sperm was first seen and described by

A. Hamm and Leeuwenhock

B. Spallazani

C. De Graff

D. VonBaer

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4

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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4

bartholine glands are found and associated with

A. female reproductive organs of cockroach

B. male reproductive organs of earthworm

C. male reproductive organs of rabbit

D. female reproductive organs of rabbit

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4

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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4

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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4

Cryptorchidism is a condition in which testes are

A. surgically removed

B. not developed in foetus

C. unable to produce sperms

D. unable to descend into scrotal sacs

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4

Allantois of the mammalian embryo helps in

A. respiration

B. excretion

C. protection

D. nutrition