NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology: Questions 188 - 193 of 3511

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Question number: 188

» Ecology and Environment » Ecosystem » Productivity and Decomposition

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MCQ▾

Question

Salinity of the soil is often caused due to

Choices

Choice (4) Response

a.

Excessive addition of water.

b.

Excessive leaching.

c.

Accumulation of soluble minerals near or in the surface in arid region.

d.

Rapid evaporation of surface water.

Question number: 189

» Biotechnology and Its Applications » Genetic Engineering

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Question

First hormone prepared by genetic engineering is

Choices

Choice (4) Response

a.

Somatotropin

b.

Adrenaline

c.

Oxytocin

d.

Insulin

Question number: 190

» Structural Organization in Animals and Plants » Plant Tissues - Morphology, Anatomy and Functions » Flower

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MCQ▾

Question

When two stamens are short and two are long, they are

Choices

Choice (4) Response

a.

varied stamens

b.

long and short stamens

c.

tetradynamous

d.

didynamous

Question number: 191

» Biology and Human Welfare » Health and Disease » Pathogens

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Question

The main reason why antibiotics could not solve all the problems of bacteria mediated diseases is

Choices

Choice (4) Response

a.

The development of mutant strains resistant to antibiotics.

b.

Insensitivity of the individual following prolonged exposure to antibiotics.

c.

Decreased efficiency of the immune system.

d.

Inactivation of antibiotics by bacterial enzymes.

Question number: 192

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

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MCQ▾

Question

The term antibiotic was coined by

Choices

Choice (4) Response

a.

Louis Pasteur

b.

Alexander Fleming

c.

S. Waksman

d.

Edward Jenner

Question number: 193

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

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MCQ▾

Question

The evidence for crossing over which occurs at four stranded stage and not at two stranded stage of the chromosomes, comes from

Choices

Choice (4) Response

a.

Studies of meiosis in maize.

b.

2: 2: 2: 2 arrangement of ascospores in Neurospora.

c.

Studies on linkage maps of chromosomes in Drosophila.

d.

4: 4 arrangement of ascospores in Neurospora.