NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology: Questions 440 - 444 of 3511

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Question number: 440

» Genetics and Evolution » Heredity and Variation » Chromosomes and Genes

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MCQ▾

Question

Gene mutation is caused by

Choices

Choice (4)Response

a.

Linkage.

b.

Change in the sequence of nitrogenous base.

c.

Reproduction.

d.

Change in the sequence of genes in DNA.

Question number: 441

» Plant Physiology » Transport in Plants » Apoplast

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Question

According to one vital force theory, ascent of sap is due to active pulsation of innermost layer of cortex. This theory was given by

Choices

Choice (4)Response

a.

J C Bose

b.

Dixon

c.

Sacks

d.

Strasburg

Question number: 442

» Plant Physiology » Photosynthesis » Pigments Involved in Photosynthesis

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MCQ▾

Question

How many molecules of water are needed by a green plant to produce one molecule of hexose/reduce 6 molecules of CO2

Choices

Choice (4)Response

a.

12

b.

6

c.

24

d.

One only

Question number: 443

» Diversity in Living World » Five Kingdom Classification » Monera

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MCQ▾

Question

Under which of the following condition a Gram positive bacteria turns Gram negative?

Choices

Choice (4)Response

a.

Aged bacterial culture.

b.

Changed pH of medium.

c.

Defective staining technique.

d.

All a. , b. and c. are correct

Question number: 444

» Biotechnology and Its Applications » Application of Biotechnology in Health and Agriculture

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MCQ▾

Question

Which one of the following is a correct statement?

Choices

Choice (4)Response

a.

Somatic hybridization involves fusion of two complete plant cells carrying desired genes.

b.

“Flavr Savr” variety of tomato has enhanced the production of ethylene which improves its taste.

c.

“Bt” in “Bt-cotton” indicates that it is a genetically modified organism produced through biotechnology.

d.

The anticoagulant hirudin is being produced from transgenic Brassica napus seeds.

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