Innate immunity is a type of
A{'text': 'Acquired immunity that develops after exposure to a pathogen', 'label': 'A'}
B{'text': 'Non-specific defence present from birth', 'label': 'B'}
C{'text': "Passive immunity received through mother's milk", 'label': 'C'}
D{'text': 'Immunity created by vaccination only', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'Non-specific defence present from birth', 'label': 'B'}
1. Innate immunity is present in an individual from birth.
2. It provides a non-specific barrier through skin, mucus, phagocytes and interferons.
3. Acquired (adaptive) immunity develops after exposure and shows memory.
4. Passive immunity comes from ready-made antibodies (mother's milk, injections).
_Source: NCERT Class 12 Biology, Ch 7 "Human Health and Disease", §7.2_
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