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Biology

Biology
Pellagra is caused due to the deficiency of

Pyridoxine
Niacin
Riboflavin
Thiamine

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Biology
Any foreign object that gains entry into the cell is immediately engulfed by the ________ and is completely broken into simple digestible pieces.

Haemoglobin
R.B.Cs
Platelets
Lysosomes

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Biology
Consider the following statements1. Different plant species grow together2. Light cannot penetrate into the lower strata full of undergrowth Which of the following type of vegetation is characterized by the above?

Mediterranean
Equatorial moist evergreen
Tropical deciduous
Warm temperate broad leaved deciduous

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Biology
The deposition of cholesterol on the walls of blood vessels causes the arteries to lose their elasticity and get stiffened is called

Arteriosclerosis
Systolic Pressure
Hypertension
Hypotension

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Biology
The energy stored in photosynthesis is obtained from

Breakdown of proteins
Sunlight
Oxidation of glucose
Breakdown of glucose

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Biology
Tracheids are conducting cells of which tissue?

Xylem
Cambium
Phloem
None of these

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