NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology: Questions 861 - 867 of 3511

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Question number: 861

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

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MCQ▾

Question

Which one of the following nitrogen – fixer is helpful in paddy fields?

Choices

Choice (4) Response

a.

Anabaena

b.

Rhizobium

c.

Archebacteria

d.

Azospirillum

Question number: 862

» Plant Physiology » Transport in Plants » Transpiration-Opening and Closing of Stomata

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MCQ▾

Question

Which one of the following will reduce the rate of transpiration?

Choices

Choice (4) Response

a.

Rise in temperature.

b.

Decrease in light intensity.

c.

Increase in water uptake by plants.

d.

Increase in wind velocity.

Question number: 863

» Plant Physiology » Mineral Nutrients » Nitrogen Metabolism

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MCQ▾

Question

Most of the plants obtain or absorb nitrogen from soil in the form of

Choices

Choice (4) Response

a.

Free nitrogen gas

b.

Nitrite

c.

Nitric acid

d.

Nitrates

Question number: 864

» Genetics and Evolution » Molecular Basis of Inheritance » DNA Replication

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MCQ▾

Question

Replication of DNA is in

Choices

Choice (4) Response

a.

3’ → 5’ direction

b.

2’ → 5’ direction

c.

3’ → 5’ and 5’→ 3’ direction

d.

Question does not provide sufficient data or is vague

Question number: 865

» Genetics and Evolution » Heredity and Variation » Mendelian Inheritance

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MCQ▾

Question

A farmer crossed a walnut combed chicken with a single combed one and obtained all walnut combed chickens in F1. The genotype of the parents was

Choices

Choice (4) Response

a.

RR pp x rr PP

b.

RR Pp x rr pp

c.

RR pp x rr pp

d.

Rr Pp x rr pp

Question number: 866

» Genetics and Evolution » Heredity and Variation » Mendelian Inheritance

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MCQ▾

Question

Mendel’s law of segregation is applicable to

Choices

Choice (4) Response

a.

Dihybrid cross only.

b.

Dihybrid but not monohybrid.

c.

Monohybrid cross only.

d.

dihybrid and monohybrid cross

Question number: 867

» Biotechnology and Its Applications » Genetically Modified Organisms

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MCQ▾

Question

Cultivation of Bt Cotton has been much in the news. The prefix “Bt” means

Choices

Choice (4) Response

a.

Carrying an endotoxin gene from Bacillus thurigiensis.

b.

“Barium-treated” cotton seeds.

c.

“Bigger thread” variety of cotton with better tensile strength

d.

Production by “biotechnology” using restriction enzymes and ligases.