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Control and Co-ordination — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYControl and Co-ordination5 Marks
Question
Functions of hormones secreted by the thyroid gland.
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Answer

  1. Thyroxine is the main metabolic hormone in the body.
  2. Thyroxine maintains basal metabolic rate (BMR) by increasing glucose oxidation. It brings about calorigenic effect by energy production.
  3. It also controls normal protein synthesis.
  4. The physical growth, development of gonads and development of mental faculties is under the control of thyroxine.
  5. It controls tissue differentiation during metamorphosis particularly in amphibia.
  6. Body weight, respiration rate, heart rate, blood pressure, temperature, digestion, etc. is regulated by thyroxine.
  7. Another hormone of thyroid, i.e. calcitonin regulates calcium metabolism of the body.

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