This category covers the pineal gland, which regulates sleep-wake cycles via melatonin, and the thyroid gland, which controls metabolism through hormones like thyroxine. It includes questions on gland functions, hormone regulation, and related disorders.
Thyroid hormones are secreted by the thyroid gland, not the adrenal gland.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Melatonin, secreted by the pineal gland, regulates the body's sleep-wake cycle and circadian rhythm.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Melatonin, secreted by the pineal gland, regulates the sleep-wake cycle and is highest at night.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Melatonin secretion increases at night and decreases during the day.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Thyroxine (T4) is secreted by the thyroid gland and requires iodine for its synthesis.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
The pineal gland secretes melatonin, which regulates the sleep-wake cycle and circadian rhythms.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Thyroxine (T4) is a major hormone secreted by the thyroid gland that regulates metabolism in the body.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
The pineal gland secretes melatonin, which helps regulate the sleep-wake cycle.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Erythropoietin, secreted by the kidneys, stimulates bone marrow to produce red blood cells.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
The pituitary gland does not secrete thyroxine; thyroxine is secreted by the thyroid gland.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
PTH, secreted by the parathyroid gland, increases calcium levels in the blood by promoting calcium absorption from bones and intestines.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Melatonin, secreted by the pineal gland, regulates the circadian rhythm, including sleep-wake cycles.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
