Home
Current Affairs January 2024

What is the correct answer?

4

Human egg is

A. centrolecithal

B. microlecithal

C. mesolecithal

D. telolecithal

Correct Answer :

B. microlecithal


Related Questions

What is the correct answer?

4

Oogonia entering the growth phase of oogenesis is called

A. primary oocyte

B. secodnary oocyte

C. ootid

D. gonocyte

What is the correct answer?

4

The formation, development and matura- j tion of the female gamete is called

A. ovulation

B. oogenesis

C. vitellogenesis

D. folliculogenesis

What is the correct answer?

4

Grey cresent is present in

A. zygote of frog

B. brain of rabbit

C. eye of frog

D. retina of cockroach

What is the correct answer?

4

For fertilization of the frog's egg

A. sperms of same species are essential

B. sperms do not need penetration

C. sperms of any animal can fertilize

D. only presence of male is sufficient

What is the correct answer?

4

Embryo sac in a hen's egg is formed by

A. ectoderm

B. meso derm

C. somatic mesoderm and endoderm

D. splanchnic mesoderm and ectoderm

What is the correct answer?

4

In frog, gastrulation is completed by

A. epiboly

B. emboly

C. both and

D. delamination

What is the correct answer?

4

During normal development the activation of the egg is achieved by

A. vitellogenesis

B. oogenesis

C. spermatogenesis

D. fertilization

What is the correct answer?

4

Metamorphosis is a characteristic feature of

A. direct ontogenic development

B. indirect ontogenic development

C. chordates

D. embryogenesis in mammals

What is the correct answer?

4

The formation of the neural tube is known as

A. neurulation

B. tubulation

C. crania tion

D. none of these

What is the correct answer?

4

The first phase in the sexual reproduction of organisms is

A. spermatogenesis

B. oogenesis

C. spermiogenesis

D. gametogenesis

What is the correct answer?

4

Which one has the capacity to reproduce without fertilization of eggs ?

A. Spider

B. Crow

C. Honeybee

D. Earthworm

What is the correct answer?

4

If an unfertilized frog's egg is pricked with a micro-needle, it will

A. die immediately

B. start dividing

C. will remain undivided

D. transform into a tadpole at a faster rate

What is the correct answer?

4

Sexual reproduction in larval condition is known as

A. paedogamy

B. autogamy

C. isogamy

D. anisogamy

What is the correct answer?

4

Mammalian placenta is

A. a cord between mother and foetus

B. place of attachment in uterus wall where exchange of material between mother and foetus takes place

C. outer covering of foetus

D. allantoic part of the uterus

What is the correct answer?

4

Constructive change in the development of frog from tadpole is

A. disappearance of tail

B. food habit becoming carnivore

C. land habit

D. excretion beocmes mesonephric

What is the correct answer?

4

Oral contraceptives check

A. ovulation

B. fertilization

C. implantation

D. entry of sperms into vagina

What is the correct answer?

4

How many cleavages are completed in 16 cell stages of frog's egg ?

A. 3

B. 8

C. 4

D. 12

What is the correct answer?

4

In order to become structurally and functionally a spermatozoan, each spermatid has to undergo a process of differentiation called

A. spermiation

B. spermiogenesis

C. spermatogenesis

D. androgenesis

What is the correct answer?

4

Which of the following does not show metamorphosis ?

A. Frog

B. Housefly

C. Hydra

D. Mosquito

What is the correct answer?

4

Cleidoic eggs are found in

A. birds

B. mammals

C. insects

D. molluscs

What is the correct answer?

4

Spermatoliosis is a process by which

A. the spermatids differentiate into spermatozoa

B. primary spermatcyte is tarnsformed into a secondary spermatocyte

C. spermatogonea complete multiplication phase

D. secondary spermatocyte extrudes polar bodies

What is the correct answer?

4

Laternal line system of sense organs present in the skin of tadpole larva

A. completely disappears during metamorphosis

B. partialy retained during metamorphosis

C. partially disappears during later stages of metamorphosis

D. fully retained in the adult frog

What is the correct answer?

4

The allantoic vesicle arises from

A. foregut

B. midgut

C. hindgut

D. somatopleure

What is the correct answer?

4

The process of synthesis of yolk by the oocyte is termed

A. folliculogenesis

B. oogenesis

C. vitellogenesis

D. spermiogenesis

What is the correct answer?

4

Which of the following do not show parental care over their young ones ?

A. mammals

B. lizards

C. fowls

D. earwigs

What is the correct answer?

4

In the human female, the primary oocytes remain small without any growth for

A. 4-5 years

B. 6-8 years

C. 8 - 10 years

D. 12 -14 years

What is the correct answer?

4

The cellular movements during gastrula-tion are called

A. epiboly

B. emboly

C. morphogenetic movements

D. involution

What is the correct answer?

4

In frog's egg the divisoin is

A. holoblastic

B. meroblastic

C. diploblastic

D. triploblastic

What is the correct answer?

4

Meroblastic cleavage is found in

A. man

B. hen's egg

C. frog

D. rabbit

What is the correct answer?

4

When the eggs are released from the ovary of frogs they are at the

A. primary oocyte stage

B. secondary oocyte stage

C. ootid stage

D. matured ova stage