Question

How are thyroid glands connected to the metamorphosis in insects?​

Answer 1

Answer:

There is a role of thyroid glands in metamorphosis in insects.

• During metamorphosis, negative regulation of thyrotropin by thyroxine (T4) is relaxed allowing higher whole-body levels of T4 that enable specific responses at the tissue/cellular level. Higher local thyroid cellular signalling leads to cell-specific responses that bring about localized developmental events.

• Thyroid hormone (TH) is the most important hormone in frog metamorphosis, a developmental process which will not occur in the absence of TH but can be induced precociously by exogenous TH.

Note :-

1. "TH" is the short form for Thyroid hormone.
2. "T4" is the short form of thyroxine.

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