Science-Class-8 NCERT (NCERT Based General Studies (GS)): Questions 264 - 270 of 468

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Question number: 264

» Science » Class-8 NCERT » Reaching the Age of Adolescence (Role of Hormones in Initiating Reproductive Function)

MCQ▾

Question

Estrogen and progesterone are:

Choices

Choice (4) Response

a.

Male hormone

b.

Female hormone

c.

Sex chromosomes

d.

All of the above

Question number: 265

» Science » Class-8 NCERT » Force and Pressure (Pressure)

MCQ▾

Question

Why does a balloon make a noise when it is popped?

Choices

Choice (4) Response

a.

Air escapes instantly

b.

Molecules of air inside the balloon coming into sudden contact with the molecules of air outside the balloon.

c.

Air pressure inside the balloon is more than outside

d.

Since balloon is made up of rubber and is expandable

Question number: 266

» Science » Class-8 NCERT » Reaching the Age of Adolescence (Hormones in Animals and Insects)

MCQ▾

Question

Metamorphosis process in frog is controlled by a hormone:

Choices

Choice (4) Response

a.

Iodine in water

b.

Thyroxin

c.

Insect hormones

d.

Both a. and b. are correct

Question number: 267

» Science » Class-8 NCERT » Reproduction in Animals (Reproduction)

MCQ▾

Question

External fertilization:

Choices

Choice (4) Response

a.

Takes place outside the body of female

b.

Takes place inside the body of female

c.

Takes place in water in movement, wind and in rainfall

d.

None of the above

Question number: 268

» Science » Class-8 NCERT » Force and Pressure (Pressure)

MCQ▾

Question

Liquid and gases exert:

Choices

Choice (4) Response

a.

Pressure

b.

Push

c.

Force

d.

Thrust

Question number: 269

» Science » Class-8 NCERT » Reproduction in Animals (Reproduction)

MCQ▾

Question

Giving birth to a fully developed foetus is called as:

Choices

Choice (4) Response

a.

Implantation

b.

Parturition

c.

Pregnancy

d.

Fertilization

Question number: 270

» Science » Class-8 NCERT » Reproduction in Animals (Reproduction)

MCQ▾

Question

Female reproductive organs are:

Choices

Choice (4) Response

a.

A pair of ovaries, testes, oviduct

b.

A pair of ovaries, oviduct and the uterus

c.

A pair of ovaries, fallopian tubes and the uterus

d.

Both b. and c. are correct

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