AIIMS (All India Institute of Medical Sciences) Biology: Questions 146 - 152 of 447

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Question number: 146

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

MCQ▾

Question

Which statement is false:

Choices

Choice (4) Response

a.

Pollens are received by stigma

b.

Tigellum is the main axis of embryo

c.

Pollen kitt is absent on pollen grains of Capsella

d.

Pollen tube discovered by Amici

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Question number: 147

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

MCQ▾

Question

Helobial endosperm is restricted usually to

Choices

Choice (4) Response

a.

Monocotyledons

b.

Gymnosperm

c.

Dicotyledons

d.

None of the above

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Question number: 148

» Plant Physiology » Plant Growth and Development » Seed Germination

MCQ▾

Question

Which of the following is not essential for the germination of seeds

Choices

Choice (4) Response

a.

O2

b.

H2O

c.

Temperature

d.

Light

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Question number: 149

» Plant Physiology » Plant Growth and Development » Seed Dormancy

MCQ▾

Question

The chemical which can break bud dormancy by its spray:

Choices

Choice (4) Response

a.

Thiourea

b.

Zeatin

c.

IAA

d.

2,4 D

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Question number: 150

» Biology and Human Welfare » Health and Disease » Basic Concepts of Immunology-Vaccines

Appeared in Year: 2004

MCQ▾

Question

The treatment of snake-bite by antivenin is an example of

Choices

Choice (4) Response

a.

Specific natural immunity

b.

Naturally acquired passive immunity

c.

Artificially acquired active immunity

d.

Artificially acquired passive immunity

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Question number: 151

» Reproduction » Sexual Reproduction in Flowering Plants » Double Fertilization

Appeared in Year: 2001

MCQ▾

Question

In angiosperms, endosperm is formed by: - [UP CPMT]

Choices

Choice (4) Response

a.

Division of fused polar nuclei

b.

Division of fused polar nuclei and male gamete

c.

Division of fused synergids and male gamete

d.

Free nuclear divisions of megaspore

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Question number: 152

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

Appeared in Year: 2005

MCQ▾

Question

Pollination in which pollen grains of one flower are transferred to the stigma of another flower of the same plant is called [UP CPMT]

Choices

Choice (4) Response

a.

Autogamy

b.

Geitonogamy

c.

Xenogamy

d.

Allogamy

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