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Biology

Biology
Sickle-cell anaemia is due to

Genes
Viruses
Bacteria
Hormones

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Biology
What is full form of BOD?

Biological Oxygen Difference
Biological Oxygen Distribution
Biological Oxygen Deficit
Biological Oxygen Demand

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Biology
Which of the following cells produce antibodies?

Monocytes
Neutrophils
Mast cells
Plasma cells

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Biology
When the diaphragm and external intercostal muscles contract,

The volume of the thorax increases
The volume of the lungs decreases
The volume of the thorax decreases
The lungs shrink

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Biology
Blood vessel bringing blood into Bowman's capsule is

Efferent arteriole
Renal vein
Renal portal vein
Afferent arteriole

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Biology
The individual chain of cells or filament in the colony of Nostoc is known as

Hormogonia
Heterocyst
Trichome
None of these

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