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Biology

Biology
PH of human blood is

7.5 - 8.0
6.2
9
7.4

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Biology
During which stage of mitosis does cytokinesis usually occur in animals ?

Anaphase
Prophase
Metaphase
Telophase

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Biology
Plants absorb dissolved nitrates from soil and convert them into

free nitrogen
ammonia
proteins
urea

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Biology
Poison glands of snakes are homologous to

stings of rays
salivary glands of vertebrates
electric organs of fishes
sebaceous glands of mammals

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Biology
Source of infection in diseases like Tuberculosis, Mumps and Whooping cough is

A vector
Carrier organism
Direct contact
Droplets of saliva

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Biology
Process of cell division can take place by

fusion
heterosis
mitosis
None of these

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