We know that some animals do metamorphosis (change from larva to adult)

This is possible because of hormones

 

Example

Insect Hormones helps insects transform from Larva to Adult

 

Thyroxine Hormones secreted by thyroid gland help in growth of frogs.

The production of throxine hormones requires the presense of iodine in water.

If Ponds do not have sufficient iodine, thyroxine hormone doesn’t form and tadpoles are unable to metamorphize into frogs.

Meramorphosis requires lodine in pond - Teachoo.jpg

  1. Class 8
  2. Chapter 10 Class 8 - Reaching The Age Of Adolescence

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.