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Biology

Biology
Which one is the first organelle to be discovered

Vacuole
Chloroplast
Nucleus
Lysosome

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

Azospirillum
Azotobacter
Nitosomonas
Nitrobacter

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Biology
Study of tissue culture is useful for

Plant
Water
Non-living
Air

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

Carrier organism
A vector
Droplets of saliva
Direct contact

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Biology
The sex of a newborn baby is determined by the chromosome inherited from

Both A & B
The Father's Father
The Mother
The Father

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Biology
At anaphase stage of mitosis in plant cells,interzonal of the spinldle fibres gets transformed into

Equatorial plate
Phragmoplast
Chloroplast
Nucleoplast

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