Question # 1

_____________ modified the Whittaker system.

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Aristotle

Margulies

Sachwartz

Both a and b

Chromosomes condensation occurs during .............. .

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G1-phase

G2-phase

S-phase

Interphase

In biological experiments, testing of hypothesis is based upon:

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Observation

Hypothesis

Data

Law

The body of which organism consists only of RNA?

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Prions

Viroids

Viruses

Algae

Which is not the function of mitosis?

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Development and growth

Cell replacement and regeneration

Asexual reproduction

Sexual reproduction

Which one is the national bird of Pakistan?

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Pigeon

Ostrich

Crow

Chakor

PH of human blood is ......................... .

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7.1

7.2

7.3

7.4

Vitamin which acts as co-enzyme is:

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Vitamin A

Vitamin K

Riboflavin

All of these

What is greatest threat to biodiversity on this planet?

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Habitat loss

Deforestation

Overpopulation

B and C

An example of bio molecule is.

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Proton

Protein

Iodine

Chlorine

Metabolism is of ............... types.

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1

2

3

4

_______________ is the process i which molecules moves from region of higher concentration to region of lower concentration.

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Diffusion

Osmiss

Active transport

Passive transport

When a plant was kept in darkness for many days, many days, its leaves turned yellow. Why?

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Leaves could not get oxygen and so there was no photosynthesis

Leaves could not get light and so there was no respiration

Leaves could not get oxygen and so there was no respiration

Leaves could not get light and so there was no photosynthesis

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