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Biology

Biology
Organisms which synthesise their own food are called

Autotrophs
Saprotrophs
Heterotrophs
Auxotrophs

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Biology
Pellagra is caused due to the deficiency of

Riboflavin
Thiamine
Niacin
Pyridoxine

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Biology
In cross section each centriole consists of a cylindrical array of how many microtubules?

9
8
7
6

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Biology
In which of the following stages of silkworm, silk is secreted

Larva
Pupa
Egg
Adult

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Biology
Prokaryotic cells lack

nucleolus
All of these
membrane bound by organelles
nuclear membrane

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Biology
Who discovered the insecticidal properties of DDT

Rachel Carson
Paul Muller
R.H. Painter
Othmanzedicer

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