Question # 1

The water and carbon dioxide are the ................ in photosynthesis.

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Reactants

Products

Both

None

A ribose sugar has carbon atoms:

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4

5

6

7

Nitrogen is present in:

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Carbohydrates

Protein

Nucleic acid

Lipids

Plants are classified on the basis of _____________

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Environmental conditions

Anatomy

Colour of flowers

All of the above

In which season Houbara bustard migrates to Pakistan and settles here?

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Summer

Spring

Autumn

Winter

What is greatest threat to biodiversity on this planet?

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Habitat loss

Deforestation

Overpopulation

B and C

The reactions which do not require light during photosynthesis are called __________ reactions.

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Chemical

Redox

Dark

Light

Exchange of materials between blood and surrounding tissues occurs in:

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Arteries

Veins

Capillaries

All of these

Loss of species makes ecosystem less ____________ and less productive.

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Beneficial

Resilient

Interactive

None of these

A cubic milimeter blood of male contains RBC:

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5 - 5.5 million

4-4.5 million

3-4 million

None of the above

Which event distinguishes meiosis form mitosis?

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Condensation of chromosomes

Loss of the nuclear membrane

Formation of metaphase plate

Pairing of homologous chromosomes

The hepatic portal vein carries blood from the _______to the_______.

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Small intestines, liver

Small Intestines, heart

Liver, heart

Small intestines, colon

Oxygen takes part in aerobic respiration is:

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Glycolysis

Link step between Glycolysis and Krebs cycle

Krebs cycle

Electron transport chain

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