Metamorphosis is affected by

Iodine

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Thyroxine

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Mineralocorticoids

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Both A and B

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Solution

The correct option is D Both A and B
Amphibian metamorphosis depends upon the amount of iodine secured by larvae; the greater the quantity the more rapid the differentiation.
Also, thyroxine initiates the numerous morphological and biochemical components of amphibian metabolism.
So, the correct option is 'Both A and B'

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Similar questions

Q. Axolotl larva shows
i. Neoteny and paedogenesis
ii. Absence of thyroxine affects metamorphosis
iii. It is hemichordate

Q. Which of the following are correct for axolotl larva?
(i) It shows neoteny and paedogenesis.
(ii) The absence of thyroxine affects metamorphosis.
(iii) It is the larva of hemichordata.

Q. Metamorphosis is

With respect to the assertion (A) and reason (R), which of the following is correct option?

A: A tadpole deprived of thyroid gland fails to metamorphose into an adult.

R: Thyroxine stimulates tissue differentiation and, therefore, affects metamorphosis of a tadpole into an adult frog.

Consider the following statements about Metamorphosis:

Which of the above statements are correct?

Only 1
Both of these
None of these
Only 2

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