CBSE Class 10 Science Control and Coordination Quiz 3

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

A Vomiting B Salivation C Heart beat D Chewing

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

A differentiate the taste of an apple from that of an ice cream B differentiate the smell of a perfume from that of an agarbatti C differentiate red light from green light D 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 a B b C c D d

4. Which statement is not true about thyroxin?

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

5. Dwarfism results due to

A Excess secretion of thyroxin B Less secretion of growth hormone C Less secretion of adrenaline D Excess secretion of growth hormone

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

A oestrogen from testes and testosterone from ovary B estrogen from adrenal gland and testosterone from pituitary gland C testosterone from testes and estrogen from ovary D testosterone from thyroid gland and estrogen from pituitary gland

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

A his blood pressure was low B his heart was beating slowly C he was suffering from goitre D his sugar level in blood was high

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

A oestrogen B testosterone C insulin D growth hormone

9. Which of the following endocrine glands is unpaired?

A Adrenal B Testes C Pituitary D Ovary

10. Junction between two neurons is called

A cell junction B neuro muscular junction C neural joint D synapse