CBSE  /  Class 11  /  Biology  /  Chemical Coordination and Integration

  • 1. 
    In the body, both the blood sodium and potassium levels are regulated by _______.

  • Pheromones
  • Aldosterone
  • Cortisol
  • Androgens

  • 2. 
    Chemical name of T is

  • Tetradiodothyronine
  • Tridiodothyronine
  • Tetraiodothyronine
  • Triiodothyronine

  • 3. 
    Anabolic steroids are ______ versions of testosterone.

  • Effective
  • Synthetic
  • Natural
  • Ineffective

  • 4. 
    Which of the following acts on bones?

  • Melatonin
  • Triiodothyronine
  • GH
  • Parathyroid

  • 5. 
    Glucagon hormone is secreted by the ______.

  • Thyroid gland
  • Adrenal gland
  • Pituitary gland
  • Pancreas

  • 6. 
    Which one of the followings are male sex hormones?

  • Insulins
  • Aldosterones
  • Androgens
  • Pheromones

  • 7. 
    Choose the incorrect statement.

  • Hormones are non-nutrient chemicals.
  • Exocrine glands are ductless glands.
  • Invertebrates have simple endocrine system.
  • All of the above statements are incorrect.

  • 8. 
    Endemic goitre is a state of

  • Increased thyroid function
  • Normal thyroid function
  • Decreased thyroid function
  • Moderate thyroid function

  • 9. 
    Match the columns.
    1. PRL – A. Pigmentation of skin
    2. LH – B. Steriod hormones
    3. ACTH – C. Formation of milk
    4. MSH – D. Gonadal activity

  • 1-C, 2-D, 3-B, 4-A
  • 1-C, 2-D, 3A, 4-B
  • 1-D, 2-C, 3-B, 4-A
  • 1-B, 2-C, 3-D, 4-A

  • 10. 
    PTH is called as hypercalcemic hormone because it leads to the

  • absorption of CaCO from the digested food
  • reabsorption of water from renal tubules
  • increasing blood calcium levels
  • maintainence ion balance in blood
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