Which of the following statements about vasopressin (ADH) is incorrect?
Vasopressin is secreted by the posterior pituitary, not the anterior pituitary.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Chemical Coordination and Integration
This category covers the study of hormones, endocrine glands, and their roles in regulating physiological processes across the body. It includes questions on hormone types, secretion control, feedback mechanisms, and disorders related to chemical coordination.
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Which condition is caused by the deficiency of insulin?
Insulin deficiency leads to diabetes mellitus, characterized by high blood glucose levels and glucose excretion in urine.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which of the following is an incorrect statement about growth hormone (GH)?
GH deficiency in childhood leads to dwarfism, not gigantism. GH excess causes gigantism.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which hormone is responsible for the regulation of blood pressure by promoting sodium excretion?
ANF, secreted by the heart, lowers blood pressure by promoting sodium excretion and vasodilation.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which disorder is caused by the hypersecretion of thyroid hormones?
Graves’ disease is caused by the excessive secretion of thyroid hormones, leading to increased metabolism and weight loss.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which hormone stimulates the production of hydrochloric acid in the stomach?
Gastrin, secreted by the stomach, stimulates the release of hydrochloric acid and pepsinogen.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which of the following is an incorrect statement regarding vasopressin (ADH)?
ADH deficiency leads to diabetes insipidus, not diabetes mellitus.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which hormone deficiency leads to cretinism in infants?
Deficiency of thyroxine (T4) during fetal development leads to cretinism, which causes mental retardation and stunted growth.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which disorder is caused by the hypersecretion of growth hormone (GH) in adults?
Acromegaly occurs in adults due to excess GH secretion, leading to enlargement of extremities and facial features.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which hormone deficiency leads to excessive urination and dehydration?
A deficiency of vasopressin (ADH) leads to diabetes insipidus, causing excessive urination and dehydration.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which hormone deficiency leads to a condition called diabetes insipidus?
Diabetes insipidus is caused by a deficiency of vasopressin (ADH), leading to excessive urination and dehydration.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders
Which hormone deficiency leads to stunted growth and dwarfism?
Deficiency of growth hormone (GH) during childhood results in pituitary dwarfism.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Endocrine Disorders