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AIIMS (All India Institute of Medical Sciences) Biology: Questions 146 - 151 of 467

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Question 146

Pollination-Types, Agencies and Examples

Question

MCQ▾

Which statement is false:

Choices

Choice (4)Response

a.

Pollens are received by stigma

b.

Pollen kitt is absent on pollen grains of Capsella

c.

Pollen tube discovered by Amici

d.

Tigellum is the main axis of embryo

Question 147

Development of Endosperm and Embryo

Question

MCQ▾

Helobial endosperm is restricted usually to

Choices

Choice (4)Response

a.

Dicotyledons

b.

Gymnosperm

c.

Monocotyledons

d.

Question does not provide sufficient data or is vague

Question 148

Question

MCQ▾

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

Choices

Choice (4)Response

a.

Light

b.

H2O

c.

Temperature

d.

O2

Question 149

Question

MCQ▾

The chemical which can break bud dormancy by its spray:

Choices

Choice (4)Response

a.

Thiourea

b.

2,4 D

c.

Zeatin

d.

IAA

Question 150

Basic Concepts of Immunology-Vaccines

Appeared in Year: 2004

Question

MCQ▾

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

Choices

Choice (4)Response

a.

Specific natural immunity

b.

Artificially acquired passive immunity

c.

Artificially acquired active immunity

d.

Naturally acquired passive immunity

Question 151

Appeared in Year: 2001

Question

MCQ▾

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

Choices

Choice (4)Response

a.

Division of fused polar nuclei

b.

Division of fused synergids and male gamete

c.

Division of fused polar nuclei and male gamete

d.

Free nuclear divisions of megaspore

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