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Biology

Biology
Pigmentation of skin is due to

melanocytes
monocytes
lymphocytes
leucocytes

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Biology
Which among the following is/are female hormones?(i) Estrogen(ii) Progesterone(iii) Testosterone

Only (iii)
(i) and (ii)
(ii) and (iii)
(i) and (iii)

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Biology
Which of the following systems in man is affected by the bite of cobra ?

Excretory
Circulatory
Nervous
Digestive

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Biology
How many pair of neves airses from vertebral column

33 pair
13 pair
31 pair
12 pair

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Biology
Photosynthesis generally takes place in which parts of the plant?

Bark and leaf
Roots and chloroplast bearing parts
steam and leaf
Leaf and other chloroplast bearing parts

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Biology
When the concentration of water and solutes on either side of the cell membrane is same, the solution is said to be

Isotonic
None of these
Hypertonic
Hypotonic

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