What cells line the ventricles of the brain?
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Which of the following glands is a source of the enzyme Ptyalin?
___________ is a straw coloured, viscous fluid constituting nearly 55 per cent of the blood.
Myopia is a defect of eyes which is also known as
Which permanent tissue makes a plant hard and stiff?
Which of the following induces nitrogen fixation in soil?
Insects that transmit diseases are known as
Which of the following is secreted by the liver?