Multiple choice

In a frog, metamorphosis is brought about by thyroxine hormone. The production of thyroxine hormone requires the presence of which of the following in water?

  1. Iron

  2. Calcium

  3. Sodium

  4. Potassium

  5. Iodine

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option. In a frog, metamorphosis is brought about by thyroxine hormone. The production of thyroxine hormone requires the presence of iodine in water.