The 24 hour (diurnal) rhythm of our body such as the sleep-wake cycle is regulated by the hormone
1. calcitonin
2. prolactin
3. adrenaline
4. melatonin
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA gland called ‘Clock of ageing’ that gradually reduces and degenerates in ageing is
1. thyroid
2. thymus
3. parathyroid
4. pituitary
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn a child of 15 years age, plasma calcium level is diagnosed below optimum level.Which organ is malfunctioning?
1. Thyroid gland
2. Liver
3. Parathyroid
4. Posterior lobe of pituitary
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : Aldosterone increases the volume of blood and other extracellular fluids.
Reason : The secretion of aldosterone is stimulated by a fall in the circulating volume of blood.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : Adrenal cortex can be removed without causing death.
Reason : Adrenal cortex is not vital for survival.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : FSH is also known as interstitial cell stimulating hormone.
Reason : It is because of the fact that FSH stimulates the interstitial cells of testis.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : Failure of secretion of somatotropin from an early age causes dwarfism in the patient.
Reason : Somatotropin hormone stimulates the body growth and elongation of long bones.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : Oxytocin is also known as Anti Diuretic hormone (ADH).
Reason : Oxytocin can cause an increase in the renal reabsorption of water.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : Failure of secretion of thyroid gland hormones from childhood causes cretinism disease.
Reason : Thyrotropin hormone maintains BMR and promote growth of body tissues.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : The tadpoles become giant tadpoles when fed on thiourea.
Reason : Thiourea is an antithyroid substance.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology