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

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Question number: 237

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

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Appeared in Year: 2007

MCQ▾

Question

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

Question number: 238

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

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Appeared in Year: 2004

MCQ▾

Question

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

Question number: 239

» Reproduction » Sexual Reproduction in Flowering Plants » Double Fertilization

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Appeared in Year: 2004

MCQ▾

Question

Double fertilization is essential for formation of [RPMT]

Choices

Choice (4)Response

a.

Nucellus

b.

Cotyledons

c.

Endosperm

d.

Seed coat

Question number: 240

» Reproduction » Human Reproduction » Gametogenesis-Spermatogenesis & Oogenesis

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Appeared in Year: 1999

MCQ▾

Question

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

Question number: 241

» Human Physiology » Breathing and Respiration » Mechanism of Breathing and Its Regulation in Humans

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MCQ▾

Question

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

Question number: 242

» Human Physiology » Breathing and Respiration » Respiratory Volumes

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MCQ▾

Question

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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