Reproduction-Sexual Reproduction in Flowering Plants (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology): Questions 1 - 6 of 93

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Question number: 1

» Reproduction » Sexual Reproduction in Flowering Plants » Pollination-Types, Agencies and Examples

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MCQ▾

Question

Pollen kit is present in

Choices

Choice (4) Response

a.

Hydrophilious flowers

b.

Ornithophilous flowers

c.

Anemophilous flowers

d.

Entomophilous flowers

Question number: 2

» Reproduction » Sexual Reproduction in Flowering Plants » Pollination-Types, Agencies and Examples

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Question

Which one of the following characters causes cross pollination?

Choices

Choice (4) Response

a.

Cleistogamy

b.

Dichogamy

c.

Homogamy

d.

All of these

Question number: 3

» Reproduction » Sexual Reproduction in Flowering Plants » Flower Structure

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Question

Part of the gynoecium which receives the pollen is called

Choices

Choice (4) Response

a.

Stigma

b.

Style

c.

Ovule

d.

Ovary

Question number: 4

» Reproduction » Sexual Reproduction in Flowering Plants » Development of Endosperm and Embryo

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Question

Even after killing the generative cell with a laser beam, the pollen grain of a flowering plant germinates and produced normal pollen tube because

Choices

Choice (4) Response

a.

Laser beam stimulates pollen germination and pollen tube growth.

b.

The contents of killed generative cell permit germination and pollen tube growth.

c.

The vegetative cell has not been damaged.

d.

The laser beam does not damage the region from which pollen tube emerges.

Question number: 5

» Reproduction » Sexual Reproduction in Flowering Plants » Pollination-Types, Agencies and Examples

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MCQ▾

Question

Correct definition of pollination is

Choices

Choice (4) Response

a.

Visits of insects in flower.

b.

Germination of pollen grain.

c.

Growth of pollen tube in ovule.

d.

Transfer of pollen grain from anther to stigma.

Question number: 6

» Reproduction » Sexual Reproduction in Flowering Plants » Special Modes-Apomixis, Parthenocarpy, Polyembryony

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Question

Despite high level of heterozygosity, the progeny derived from seed of a cross pollinated plant was found to be completely uniform. One reason for this may be the phenomenon of

Choices

Choice (4) Response

a.

polyploidy

b.

Induced mutation

c.

Apomixes

d.

Parthenocarpy

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