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Biology

Biology
Plants absorb dissolved nitrates from soil and convert them into

proteins
free nitrogen
urea
ammonia

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Biology
Deficiency of which of the following causes non-clotting of blood?

Vitamin B12
Vitamin K
Vitamin E
Vitamin C

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Biology
In plants which one of the following tissues is dead ?

Parenchyma
Collenchyma
Phloem
Sclerenchyma

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

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

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Biology
Of the following ,which of the most fundamental generalization in biology?

Micor-biology
Cell theory
Discovery of Cell
Microscope

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Biology
Which phase's intiationis indicated by the appearance of the chromosomes as thin threads in the nucleus?

Anaphase
Prophase
Telophase
Metaphase

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