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Biology

Biology
Medulla oblongata is a part of which of the following?

Stomach
Brain
Lungs
Heart

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Biology
Gestation period in human

9 month
6 month
8 month
7 month

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Biology
Which of the following bacterium causes crown gall disease in plants?

Agrobacterium tumefaciens
None of these
Pseudomonas fluorescens
Bacillus thurigiensis

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Biology
Melvin calvin got Noble Prize for his studies on

Photons
Carbon fixation
Plant hormones
Light reaction

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Biology
The unicellular algae used to supply and regulate the oxygen in space programmes is

Chlorella
Spyrogyra
Ulothrix
Odogonium

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Biology
Which one of the following organisms is dependent on saprophytic mode of nutrition?

Ulothrix
Cladophora
Riccia
Agaricus

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