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Biology

Biology
Main nitrogenous product formed in man

Urea
Ammonia
Ammonium nitrate
Uric acid

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Biology
They play key roles in the contraction of muscles,digestion of food and clotting of blood.

Vitamins
Proteins
Carbohydrates
Fats

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Biology
The pollen grains of Pinus are carried to its female cone through the

Pollen tube
Insects
Animals
Wind

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Biology
Which among the following does not have a cell wall?

Mycoplasma
Gonyaulax
Paramecium
Euglena

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Biology
Blood is

Alkaline
Neutral
Like a buffer
Acidic

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Biology
In plants,which cells carry out photosynthesis?

Sclerenchymatous
Paranchymatous
None of these
Chlorenchymatous

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