What are growth factors?

What are growth factors?
  1. Hormones secreted by endocrine glands
  2. Hormones secreted by non-endocrine tissues
  3. Hormones secreted by endocrine cells in the gastro-intestinal tract
  4. None of the above

Solution

Growth factors are hormones secreted by non-endocrine tissues, which are essential for the normal growth of tissues and their repairing/regeneration.

Asked in: NCERT

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