Why of the following hormones plays a very important role in the regulation of diurnal rhythm of our body ?

Which of the following hormones plays a very important role in the regulation of diurnal rhythm of our body ?

Which of the following hormones plays a very important role in the regulation of a 24 hour (diurnal) rhythm of our body. It helps in maintaining the normal rhythms of sleep-wake cycle, body temperature. It influences pigmentation, the menstrual cycle as well as our defense capability?

Which of the following hormones plays an important role in seed maturation ?

Which of the following hormones plays an important role in seed maturation ?

Mitochondria play a very important role in :

Which hormone plays an important role in the formation of roots?

Assertion: Melatonin influences the menstrul cycle, Pigmentation and defense capability. Reason: Melatonin plays an important role in the regulation of diural rhythm of our body.