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Biology

Biology
PH of human blood is

9
7.4
6.2
7.5 - 8.0

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Biology
Study of butterfly is

Polynalogy
Lapidopterology
Ichthyology
Neonatology

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Biology
The xylem in plants are responsible for:

Transport of oxygen
Transport of water
Transport of food
Transport of amino acids

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Biology
It is composed of two polynucleotide chains which are coiled round each other in the form of a double helix.

None of these
RNA
Fats
DNA

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Biology
Which among the following carries impure blood to human heart?

Pulmonary vein
Pulmonary arteries
Aorta
Vena Cava

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Biology
Which of the following organs do not have blood vessels?

Liver
None of these
Cornea
Spleen

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