Question

(a) Deficiency of hormone (X') causes a bulge in the neck region of human
beings. This hormone also plays a very important role in the life cycle of
frogs.
(i) Identify the hormone (X').
(i) Name the gland that secretes this hormone.
(ii) What name is given to this condition (bulge in the neck region) in
human beings ?
(iv) Which mineral intake can help to overcome this disorder ?
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Answer 1

Answer:

deficiency of hormone thyroxine

thyroid gland

thyroid

iodine