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Biology

Biology
Study of effect of radiation on plant and animal is

Pathology
Cosmology
Radiobiology
Etiology

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Biology
PH of human blood is

7.4
9
6.2
7.5 - 8.0

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Biology
Which vitamin is necessary for blood clotting

Vitamin D
Vitamin A
Vitamin K
Vitamin C

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Biology
In N2- fixation process, nitrite is converted to nitrate by

Azospirillum
Nitosomonas
Azotobacter
Nitrobacter

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Biology
The food material prepared in the plants is transported to the various organs by which of the following?

Xylem
Phloem
Cambium
Cortex

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Biology
Melvin calvin got Noble Prize for his studies on

Carbon fixation
Photons
Plant hormones
Light reaction

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