NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1139 - 1144 of 1484

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Question number: 1139

» Biology » Hereditary and Variation

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MCQ▾

Question

The process of modifying organisms by selection in breeding controlled by humans is:

Choices

Choice (4) Response

a.

Natural selection

b.

Artificial selection

c.

Stabilizing selection

d.

Directional selection

Question number: 1140

» Biology » Control and Coordination

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MCQ▾

Question

Identify P, Q and R in the given figure.

Image showing Human brain part.

Image Showing Human Brain Part.

Image showing Human brain part.

Choices

Choice (4) Response

a.

P – Corpus callosum, Q – Pons, R – Medulla

b.

P – Cerebrum, Q – Midbrain, R – Thalamus

c.

P – Spinal cord, Q – Cerebellum, R – Brain stem

d.

P – Ventricles, Q – Hypothalamus, R – Pituitary gland

Question number: 1141

» Biology » Hereditary and Variation

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MCQ▾

Question

Who suggested the theory that evolution has possible because the organism mutates to have a new trait?

Choices

Choice (4) Response

a.

Jean Baptiste Lamarck

b.

Alfred Russel Wallace

c.

Hugo Devries

d.

Charles Darwin

Question number: 1142

» Biology » Reproduction

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MCQ▾

Question

Which of the following is act as endocrine gland and removes carbon dioxide and waste material from the embryo?

Choices

Choice (4) Response

a.

Uterine wall

b.

Amniotic fluid

c.

Placenta

d.

Umbilical fluid

Question number: 1143

» Physics » Electricity

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MCQ▾

Question

Which of the following hormones used in parthenocarpy?

I. IAA

II. IBA

III. Cytokinins

Choices

Choice (4) Response

a.

I, II and III only

b.

III and I only

c.

II and III only

d.

I and II only

Question number: 1144

» Biology » Hereditary and Variation

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MCQ▾

Question

What is organic evolution?

I. The genetic composition of populations of organisms occur in response to environmental changes

II. Change in allele frequencies over time

III. Reversible

Which of the statement/ (s) is/are correct?

Choices

Choice (4) Response

a.

I only

b.

I and III only

c.

I, II and III only

d.

II and III only

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