CONTROL AND COORDINATION –1 Mark Questions

  Q1. Name two tissues, which provide control and coordination in animals.

  Q2. Name two components of the central nervous system in humans.                 

  Q3. Give some examples of involuntary actions.

  Q4. Give anyone function performed by our brain.

 Q5. Name any two types of tropic movements.

Q6. Name one plant growth hormone, which makes the seed dormant during extremely dry season.

Q7. Why adrenaline is known as emergency hormone?

Q8. What are inhibitory hormones?

Q9. Endocrine glands are called ductless glands. Why?

Q10. Define phototropism.

Q11. Give one example of chemotropism.

Q12. State the main functions of abscisic acid in plants.

Q13. Name two components of central nervous system in humans.

Q14. Name the largest cell present in the human body.

Q15. Mention the part of the brain which controls the involuntary actions like blood pressure, salivation etc.

Q16. Name the part of the neuron where information is acquired.

Q17. What is synapse?

Q18. Mention the part of the body where gustatory and olfactory receptors are located.

Q19. Define feedback mechanism of hormones.

Q20. Name the diseases by which a person is likely to suffer due to the deficiency of:

          (i)   Iodine

         (ii)  Insulin

Q21. We suddenly pull our and away on touching a pointed object. Name the type of response involved in this action.

Q22.’This plant hormone has its maximum concentration in fruits and seeds.’ Name the plant hormone.

Q23. Is reflex action the only function of spinal cord. Support your answer with a single statement.

Q24. The sensation of feeling fear or hunger is associated with which part of brain?

Q25. Name the source and target organ of adrenaline.

 Directions (Q. Nos. 26 – 30) In the following questions, a statement of Assertion is followed by a statement of Reason. Mark the correct choice as

(a) If both Assertion and Reason are true, and Reason is the correct explanation of Assertion

(b) If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion

(c) If Assertion is true, but Reason is false

(d) If Reason is true, but Assertion is false

(e) If both Assertion and Reason are false

Q26. Assertion: Activities like walking in a straight line – riding a bicycle are possible due to cerebellum.

           Reason: Cerebellum is responsible for precision of the voluntary actions and maintaining the posture and balance of the body.

Q27. Assertion: When light comes from one side of a plant, the plant bends towards light.

            Reason: Auxin diffuses towards the shady side of the shoot and causes the cells to grow longer on that side of the shoot which Is away from light.

Q28. Assertion: The cerebrospinal fluid is found between the meninges.

             Reason: The cerebrospinal fluid protects the brain from external shocks.

Q29. Assertion: Thyroid Glands are called ductless glands.

             Reason: Thyroid glands are located at the place where they are required.

Q30. Assertion: Phototropism and Geotropism are two opposite kind of tropism.

            Reason: Geotropism is seen in roots and phototropism is seen in shoots.

Q31. Which one of the following is the main thinking part of the brain?

(a) Forebrain       

(b) Midbrain

(c) Hindbrain      

(d) Medulla

Q32. In response to nervous electrical impulses, the special proteins found in muscle cells change their

(a) shape                                           

(b) size

(c) arrangement in the cell                             

(d) Both (a) and (c)

Q33. Which of the following group of plant hormones help in the growth of the stem?

(a)  Auxins and cytokinins        

(b) Gibberellins and abscisic acid

(c)  Auxins and gibberellins     

(d)  None of the above

Q34. Which one of following hormones regulates carbohydrate, protein and fat metabolism in the body?

(a)  Insulin                         

(b) Thyroxine

(b) Growth hormone         

(d) Oestrogen

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