CBSE Class-8 Science: Questions 257 - 263 of 469

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Question number: 257

» Conservation of Plants and Animals » Conservation of Forest and Wildlife » Sanctuary

MCQ▾

Question

Sanctuary is defined as:

Choices

Choice (4) Response

a.

These are the areas meant for conserving biodiversity

b.

An area where killing or capturing of any species of wild animals is prohibited

c.

In sanctuaries natural habitat of an organism is not disturbed

d.

Both b. and c. are correct

Question number: 258

» Reaching the Age of Adolescence » Hormones Other Than Sex Hormones » Thyroxin

MCQ▾

Question

Thyroid gland produces hormone:

Choices

Choice (4) Response

a.

Insulin

b.

Adrenalin

c.

Thyroxin

d.

Glucagon

Question number: 259

» Force and Pressure » Pressure » Introduction to Concept of Pressure

MCQ▾

Question

Thrust acting on a unit area of a surface is called:

Choices

Choice (4) Response

a.

Pressure

b.

Force

c.

Pull

d.

Push

Question number: 260

» Conservation of Plants and Animals » Deforestation » Natural Calamities

MCQ▾

Question

Deforestation leads natural calamities such as:

Choices

Choice (4) Response

a.

Reduces the level of ground water

AND

Drought

b.

Desertification

c.

Global warming

d.

All a. , b. and c. are correct

Question number: 261

» Reaching the Age of Adolescence » Hormones Other Than Sex Hormones » Growth Hormone

MCQ▾

Question

Pituitary gland has the:

Choices

Choice (4) Response

a.

Growth hormones

b.

Stress hormones

c.

Sex hormones

d.

None of the above

Question number: 262

» Reaching the Age of Adolescence » Adolescence and Puberty » Secondary Sexual Characters

MCQ▾

Question

Secondary sexual changes in the girls are:

Choices

Choice (4) Response

a.

Breast begin to develop

b.

Hair grows under the arms and pubic region

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 263

» Reaching the Age of Adolescence » Adolescence and Puberty » Definition of Adolescence

MCQ▾

Question

The period of life when the body undergoes changes leading to reproductive maturity is called as:

Choices

Choice (4) Response

a.

Adam’s apple

b.

Adolescence

c.

Puberty

d.

All of the above

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