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प्रश्न
Given below are the groups of certain substances of particular categories. Mention the category of each group and identify the wrong example giving reason.
Tears, skin, nasal secretion, HCl (in stomach)
उत्तर
Tears, skin, nasal secretion, HCl (in stomach)
Germ-killing secretions. Skin is a wrong example as it is a protective mechanical barrier and prevents the entry of germs in our body.
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संबंधित प्रश्न
Write short (2-3 sentences) note on immunisation.
Write short (2-3 sentences) note on vaccination.
Define the following:
Immunisation
Define the following:
Immunity
Define the following:
Vaccine
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Expand the following.
DPT-
Expand the following.
BCG-
State whether true or false. If false, correct the statement.
The process of vaccination was developed by Jenner.
The typhoid vaccine which is administered orally is ______
