Multiple choice

In a tadpole larva of frog thyroxine is prevented to mix with blood. This would result in

  1. gigantic size of animal

  2. stunted size of animal

  3. acceleration of metamorphosis

  4. postponement of metamorphosis

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

Thyroxine is the hormone responsible for triggering metamorphosis in amphibians. If it is prevented from reaching the blood, the tadpole will not undergo metamorphosis, leading to a postponement of the process.