Question # 1

Organisms which are very similar and have a tendency of inbreeding are called

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Species

Gene pool

Community

Niche

Which of the following substances provide energy to the body

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Carbohydrates

Fats

Amino acids

All of above

Primary source of carbohydrates are

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Animals

Plants

Both a and b

None

DNA and RNA molecules are made up of repeating unites called

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Nucleosides

Nucleotides

Phosphate group

Nitrogenous bases

For maximum growth the optimum temperature is

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0 - 35^oC

5- 10^oC

25-30^oC

0- 45^oC

Water regulation in fresh water ciliates is controlled by special organelle called

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Food vacuole

Contractile vacuole

Cytoplasm

Nucleus

Respiration in plants occurs only

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Day

Night

Day and night

Day & evening

Plasmid pBR 322 has antibiotic resistance for

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Tetracycline + Ampicillin

Penciline

Neuomycin

Tetracycline + Penciline

A programmed series of stages from a simpler of more complex forms is

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Development

Growth

All above

None

Plasmids were discovered by studying the sex life of the intestinal bacterium

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Entamoeba histolytica

Escherichia coli

Anabena

Plasmodium

The Locomotory organs of zoo-flagellates are

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Cillia

Flagella

Pseudopods

None

The specialized microtubule structure called mitotic apparatus including

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Aster

Spindle

Both A and B

None

Which of the following is small and Localized tumor

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Undividing cells

Benign

Malignant

All of above

A net work of very fine threads of chromosomes can be visualized & this network is called

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DNA network

Chromatin

Nucleosome

Nucleoside

In planarians the exchange of materials takes place by

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Blood circulatory system

Flame cells

No special transport system

None

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