AIIMS Biology: Questions 238 - 243 of 428

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Question number: 238

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

Appeared in Year: 2004

MCQ▾

Question

Apogamy is [Uttaranchal PMT]

Choices

Choice (4) Response

a.

Failure of fusion of gametes

b.

Development of bacteria

c.

Reproduction of virus

d.

All of the above

Question number: 239

» Reproduction » Sexual Reproduction in Flowering Plants » Double Fertilization

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

Appeared in Year: 1999

MCQ▾

Question

The head of mature mammalian sperm is made of

Choices

Choice (4) Response

a.

Elongated nucleus covered by acrosome

b.

An acrosome

c.

Two centrioles and an axial filament

d.

Nucleus, acrosome, cytoplasm and mitochondrial sheath

Question number: 241

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

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Passive transport

b.

Active transport

c.

Simple diffusion

d.

Osmosis

Question number: 242

» Human Physiology » Breathing and Respiration » Respiratory Volumes

MCQ▾

Question

Oxyhemoglobin is an unstable compound because

Choices

Choice (4) Response

a.

Hemoglobin is a complex pigmented protein.

b.

There is a physical bounding between oxygen and hemoglobin.

c.

There is a chemical bounding between oxygen and hemoglobin.

d.

One molecule of hemoglobin combines with four molecules of oxygen.

Question number: 243

» Biology and Human Welfare » Health and Disease

Appeared in Year: 1985

MCQ▾

Question

In alcoholics liver gets damaged as it

Choices

Choice (4) Response

a.

Accumulates excess of fats

b.

Secretes more bile

c.

Stores excess of glycogen

d.

Has to detoxify alcohol

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