NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1138 - 1142 of 1484

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Question number: 1138

» Biology » Control and Coordination

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MCQ▾

Question

Which of the following functions are stimulated by plant hormones in the agricultural field?

I. Dormancy

II. Weed killers

III. Rooting powder

Choices

Choice (4)Response

a.

I and II only

b.

I, II and III only

c.

I and III only

d.

II and III only

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

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

Developed by: