Explain in detail..
Q. The main effective chemical factor in thyroxine is:
(a) Thiamine (b) Iodine
(c) Calcium (d) Phosphorus
Q. Iodine deficiency in frog tadpole will lead to :
(a) development of a giant frog
(b) inhibition of metamorphosis
(c) develoment of miniature frong
(d) accelerated metamorphosis
Dear Student,
The answer to your first question is (b) Iodine
The main constituent of Thyroxine is iodine. Iodine is essential dietary mineral which makes up constituents f Thyroid Hormone i.e Thyroxine (T​4) and Triiodothyronine. (T3)
The answer to your second question is (b) Inhibition of Metamorphosis
The iodine deficiency will lead to deficiency of Thyroxine which eventually retards metamorphosis. But the larval stage continues.
Hope it helps.
Regards!
The answer to your first question is (b) Iodine
The main constituent of Thyroxine is iodine. Iodine is essential dietary mineral which makes up constituents f Thyroid Hormone i.e Thyroxine (T​4) and Triiodothyronine. (T3)
The answer to your second question is (b) Inhibition of Metamorphosis
The iodine deficiency will lead to deficiency of Thyroxine which eventually retards metamorphosis. But the larval stage continues.
Hope it helps.
Regards!