CBSE  /  Class 10  /  Science  /  Control and Coordination

  • 1. 
    Which of the following is not an involuntary action?

  • Vomiting
  • Salivation
  • Heart beat
  • Chewing

  • 2. 
    When a person is suffering from severe cold, he or she cannot

  • differentiate the taste of an apple from that of an ice cream
  • differentiate the smell of a perfume from that of an agarbatti
  • differentiate red light from green light
  • differentiate a hot object from a cold object

  • 3. 
    What is the correct direction of flow of electrical impulses?
    MCQ Questions for Class 10 Science Chapter 7 Control and Coordination with Answers

  • a
  • b
  • c
  • d

  • 4. 
    Which statement is not true about thyroxin?

  • Iron is essential for the synthesis of thyroxin
  • It regulates carbohydrates, protein and fat metabolism in the body
  • Thyroid gland requires iodine to synthesise thyroxin
  • Thyroxin is also called thyroid hormone

  • 5. 
    Dwarfism results due to

  • Excess secretion of thyroxin
  • Less secretion of growth hormone
  • Less secretion of adrenaline
  • Excess secretion of growth hormone

  • 6. 
    Dramatic changes of body features associated with puberty are mainly because of secretion of

  • oestrogen from testes and testosterone from ovary
  • estrogen from adrenal gland and testosterone from pituitary gland
  • testosterone from testes and estrogen from ovary
  • testosterone from thyroid gland and estrogen from pituitary gland

  • 7. 
    A doctor advised a person to take an injection of insulin because

  • his blood pressure was low
  • his heart was beating slowly
  • he was suffering from goitre
  • his sugar level in blood was high

  • 8. 
    The hormone which increases the fertility in males is called

  • oestrogen
  • testosterone
  • insulin
  • growth hormone

  • 9. 
    Which of the following endocrine glands is unpaired?

  • Adrenal
  • Testes
  • Pituitary
  • Ovary

  • 10. 
    Junction between two neurons is called

  • cell junction
  • neuro muscular junction
  • neural joint
  • synapse
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