3(v)
Ratan, a 10-year-old boy was going home from school on a rainy day. He hears a loud thunderbolt and closes his ears suddenly.
(a) What kind of reflex action is this?
(b) Which part of the brain is involved in this action?
(c) Which sense organ triggered it?
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(a) It is natural (inborn) reflex action, as it is an automatic protective response which is not learnt.
(b) Medulla oblongata
(c) Ear