NEET Biology: Questions 643 - 649 of 3239

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Question number: 643

» Plant Physiology » Transport in Plants » Guttation

MCQ▾

Question

A specialized multicellular structure in leaves which excretes water droplets is called as

Choices

Choice (4) Response

a.

Hydathodes

b.

Stomata

c.

Wounds

d.

Lenticels

Question number: 644

» Diversity in Living World » What Is Living? » Binomial Nomenclature

MCQ▾

Question

Binomial nomenclature means

Choices

Choice (4) Response

a.

Two names of same plant.

b.

One name given by two scientists.

c.

Two names, one latinised, other of a person.

d.

One scientific name consisting of a generic and specific epither.

Question number: 645

» Genetics and Evolution » Heredity and Variation » Mendelian Inheritance

MCQ▾

Question

In 1990 A. D. three biologists independently discovered Mendel’s principles. They are

Choices

Choice (4) Response

a.

Avery, McLeod and McCarthy.

b.

Sutton, Morgan and Bridges.

c.

De Vries, Correns and Tschermak.

d.

Bateson, Punnet and Bridgess.

Question number: 646

» Biotechnology and Its Applications » Genetic Engineering

MCQ▾

Question

Which one of the following bacteria is been found to be extensively used in genetic engineering work in plants?

Choices

Choice (4) Response

a.

Clostridium septicum

b.

Protein coagulens

c.

Xanthomonas citri

d.

Agrobacterium tumefaciens

Question number: 647

» Genetics and Evolution » Heredity and Variation » Chromosome Theory of Inheritance

MCQ▾

Question

Kappa particles indicate

Choices

Choice (4) Response

a.

Nucleo-cytoplasmic inheritance

b.

Nuclear inheritance

c.

Mutation

d.

Cytoplasmic inheritance

Question number: 648

» Diversity in Living World » Five Kingdom Classification » Plant Group - Pteridophytes

MCQ▾

Question

Fern prothallus is

Choices

Choice (4) Response

a.

heteromorphic

b.

heterothallic

c.

homothallic

d.

heterotrophic

Question number: 649

» Ecology and Environment » Organisms and Environment » Population and Ecological Adaptations

MCQ▾

Question

What is a keystone species?

Choices

Choice (4) Response

a.

A common species that has plenty of biomass, yet has a fairly low impact on the community’s organization.

b.

A rare species that has minimal impact on the biomass and on other species in the community.

c.

A dominant species that constitutes a large proportion of the biomass and which affects many other species.

d.

A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community’s organization and survival.

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