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Biology

Biology
Stomata open at night in

C4 plants
Succulent plants
C3 plants
CAM plants

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Biology
Bleeding of gums, falling of teeth, fragile bones and delayed wound healing occur due to the deficiency of which one of the following vitamins?

Vitamin K
Vitamin D
Vitamin C
Vitamin B

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Biology
Bone deformities occur due to the excess intake of

Fluorine
Fatty acid
Potassium
Phosphorus

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Biology
Fossils of blue green algae were found in lime stones with the age almost as old as

2.3 Billion years
1.3 Billion years
4.3 Billion years
3.3 Billion years

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Biology
The plasma of the blood contains which among the following constituents?I. ProteinsII. SaltsIII. Hormones

Only I and II
All I, II and III
Only I and III
Only II and III

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Biology
Dialysis is used to perform the function of

Lung
Kidney
Heart
Liver

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