Question # 1

For gaseous exchange the leaf and young stems have in their epidermis:

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Stomata

Lenticels

Companion cell

Guard cells

____________ hydrogen bonds are present between cytosine and guanine:

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2

3

4

5

The current level of urbanization in Pakistan is about_____ which is not high by global standards.

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23%

32%

36%

39%

The primary chemical stimulus for breathing is the concentration of.

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Carbon dioxide in blood.

Oxygen in blood

Carbon oxide in muscles

Oxygen in muscles.

The elongation of eye-ball results in.

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Myopia

Blindness

Deafness

None of these

In a nucleosome, DNA is wrapped around protein named.

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Insulin

Interferon

Histone

Haemoglobin

What are not filtered through glomerular capillaries?

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Blood cells & Proteins

Fats & Proteins

Fats & Salts

Salts & Proteins

Which of the following is the abiotic part of ecosystems?

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Grass

Goat

Lion

Soil

The number of drug addicts in Pakistan's currently to be about.

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200000

300000

400000

500000

Medicine prepared in Laboratory are called:

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Synthetic

Plantis made

Animals made

Minerals made

Psilocin is obtained from.

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Cactus

Mushroom

Cannabis stive

Cannabis indica

Study of composition and medical application of drugs is called:

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Mycology

Biotechnology

Pharmacology

Physiology

The structural and functional unit of nervous system is:

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neuron

nephorn

nerve

cell body

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