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AIIMS (All India Institute of Medical Sciences) Biology: Questions 237 - 242 of 467

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Question 237

Appeared in Year: 2007

Question MCQ▾

Mesogamy is [UP CPMT]

Choices

Choice (4)Response

a.

Fusion of physiologically similar and morphologically different gametes

b.

Entry of pollen tube through integuments

c.

Fusion of male and female gametes

d.

Question does not provide sufficient data or is vague

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Question 238

Appeared in Year: 2004

Question MCQ▾

Apogamy is [Uttaranchal PMT]

Choices

Choice (4)Response

a.

Reproduction of virus

b.

Development of bacteria

c.

Failure of fusion of gametes

d.

None of the above

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Question 239

Appeared in Year: 2004

Question MCQ▾

Double fertilization is essential for formation of [RPMT]

Choices

Choice (4)Response

a.

Nucellus

b.

Cotyledons

c.

Endosperm

d.

Seed coat

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Question 240

Appeared in Year: 1999

Question MCQ▾

The head of mature mammalian sperm is made of

Choices

Choice (4)Response

a.

Two centrioles and an axial filament

b.

Nucleus, acrosome, cytoplasm and mitochondrial sheath

c.

An acrosome

d.

Elongated nucleus covered by acrosome

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Question 241

Question MCQ▾

The exchange of gases in the alveoli of the lungs takes place by

Choices

Choice (4)Response

a.

Simple diffusion

b.

Osmosis

c.

Active transport

d.

Passive transport

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Question 242

Question MCQ▾

Oxyhemoglobin is an unstable compound because

Choices

Choice (4)Response

a.

One molecule of hemoglobin combines with four molecules of oxygen.

b.

There is a chemical bounding between oxygen and hemoglobin.

c.

Hemoglobin is a complex pigmented protein.

d.

There is a physical bounding between oxygen and hemoglobin.

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