Biology [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 484 - 489 of 518

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Question 484

Question MCQ▾

Steps in Genetic engineering include

Choices

Choice (4)Response

a.

Fusion with bacterial plasmid and introducing into bacteria

b.

Selection and extraction of desired gene

c.

Selection of transformed bacteria and its culture

d.

All a., b. and c. are correct

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Question 485

Question MCQ▾

Which of the following is method of sterilization?

Choices

Choice (4)Response

a.

Autoclave

b.

Centrifugation

c.

PCR

d.

Electrophoresis

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Question 486

Question MCQ▾

Organic matter is important as

Choices

Choice (4)Response

a.

it increases fertility of soil

b.

it provides texture to soil

c.

increases water holding capacity

d.

All a., b. and c. are correct

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Question 487

Question MCQ▾

Which of the following is associated with chlorophyll?

Choices

Choice (4)Response

a.

Mg

b.

Ca

c.

Fe

d.

Na

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Question 488

Question MCQ▾

Vermicomposting is

Choices

Choice (4)Response

a.

Preparation of compost using bacteria

b.

Preparation of compost using fungi

c.

Preparation of compost using Honey bee

d.

Preparation of compost using earthworms

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Question 489

Question MCQ▾

What are the impacts of global warming and climate disruption on agriculture?

Choices

Choice (4)Response

a.

Adverse human health causing less manpower

b.

Desertification

c.

Impaired photosynthesis

d.

All a., b. and c. are correct

Edit