CONTROL AND CO-ORDINATION 10

PRACTICE PAPER

SUB : BIOLOGY (2020)

CLASS X                                   CONTROL AND COORDINATION                                                    

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I. Very short answer type questions: 

1. What is the function of receptors?
2. Write the correct sequence of electric impulse travels in a neuron.
3. Where is the conversion of an electric signal to a chemical signal in a neuron occurs?
4. Which element is necessary for the synthesis of thyroxin hormone?
5.  Which part of the brain controls voluntary actions?
6.  Which gland secrets the hormone insulin?
7. All information for our environment is detected by the specialized tip of some nerve cells. Mention the name given to search tips and also mention where are they located?
8. What is the function of the tendril in the pea plant?
9. Define chemotropism.
10. Define phototropism.
11. What is the reason for dwarfism?
12. Write three paired glands and one unpaired gland.
13. What is the junction between two neurons?
14. Which system control and regulate the life processes in human?
15. Which hormone increases fertility in males?
16. Which chemical substance is responsible for the formation of abscission which disconnects the living tissue of leaf from the other parts?
17. Name the sensory receptors found in the nose and on the tongue?
18. Name the part of the brain which controls the posture and balance of the body.
19. Name the two components of the central nervous system in humans.
20. Mention that part of the body where gustatory and olfactory receptors are located.
21. How do the shoot and root of plant response to the pull of Earth's gravity?
22. State the main functions of abscisic acid in Plants.
23. What is a synapse?
24. A boy runs on seeing a stray dog, his breathing becomes very fast and blood pressure also increases. Name the hormones found to be high in his blood and the gland which produces it. 
25. What is meant by tropic movement?
26. While watering a rose plant, a thorn pricked Rita's hand. How would she respond to this situation? Provide the term for such type of response.
27. Name the part of the neuron where information is acquired.
28. Name the part of the neuron through which the information travels as an electric impulse.  
29. Name the mechanism by which the amount of hormones in the blood is regulated.
30. Name two tissues that provide control and coordination in animals.
31. Name the disease by which a person is likely to suffer due to the deficiency of Iodine and Insulin.
32. Define phototropism.
33. Name the largest cell present in the human body.
34. How does our body maintain blood sugar levels?

II. Short answer type question: 

1. Name the hormones responsible for the regulation of (i) Metabolism of carbohydrates fats and proteins. (ii) Balance of calcium and phosphate (iii) Blood pressure (iv) Water and electrolyte balance.
2. When a person is suffering from severe cold, he or she cannot differentiate the smell of perfume. Why?
3. What will happen if the intake of iodine in our diet is low?
4. What is tropic movement? Explain with an example.
5. What is reflex action ? Give two examples. 
6. Explain the cause of shoots of the plant bending towards the light.
7. What are the nastic and curvature movements? Give one example of each.
8. Write the name and function of any two parts of the hindbrain.
9. Explain with the help of an example of how the timing and amount of hormones released regulated? 
10. Nervous and hormonal systems together perform the function of control and coordination in human beings. Justify the statement.
11. (i) Draw a well-labeled diagram of the human brain. 
    (ii) Which is the main thinking part of the brain? 
12. Identify the gland that secretes (i) Insulin & (ii) Thyroxin. 
13. Name the property that causes the tendrils to circle around the object. Explain how it happens and how the plan is benefited by it. 
14. How does chemical coordination take place in animals?
15. How is the brain protected from injury and Shock? Name two main parts of the hindbrain and state the function of each.
16. Name a hormone secreted by the (i) Pancreas (ii) Pituitary (iii) Thyroid. State one function of each of the hormone
17. Define reflex action. Give one example. Show with the help of a flow diagram of the path of the reflex action.
18. How do auxins help in bending of the stem towards the light? Explain.
19. How do auxins promote the growth of a tendril around a support? Describe in brief.
20. In the given diagram of reflex arc (i) Name the parts labeled A B C D  and G (ii) Write the functions of B & C.
    
21. Name the hormones that are secreted by our body to deal with scary situations. List any two responses shown by our body when these hormones are secreted into the blood.
22. Electrical impulses are an excellent means of quick transfer of information in animals but there is a limitation to the use of electrical impulses. A list such as limitations. State the other means of communication used by most multicellular organisms between the cells.
23. Name the plant hormones responsible for the following:
    (i) Elongation of cells
    (ii) Growth of steam
    (iii) Promotion of cell division
    (iv) Falling of sensors and leaves.
24. While watering a rose plant, a thorn pricked Rita's hand. How would she respond to this situation? Provide the term for such type of response.
25. State the role of the brain in a reflex action.
26. What happens at the synapse between two neurons?
27. The gland secretes a particular hormone that deficiency of these hormones in the body causes a particular disease in which the blood sugar level rises.
28. Brain and spinal cord are two vital organs of our body. How is our body designs to protect them?
29. (i) Name the part of the neuron where information is acquired. 
    (ii) Through which information travels as an electrical impulse. 

III. Long answer type questions:

1. Mention one function of each of these hormones: Thyroxine, Insulin, Adrenaline, Growth hormones and Testosterone.
2. What are the major parts of the brain? Mention the function of different parts.
3. I. Answer the following :
    (i) Name the endocrine glands associated with the brain.
   (ii) Which gland secretes digestive enzymes as well as hormones?
   (iii) Name the endocrine gland associated with Kidneys?
   (iv) Which endocrine gland is represented in males but not in a female?
   II. List in tabular form the three differences in the movement of leaves of a touch-me-not plant when touched and movement of a tendril towards support.
4. I. Name that hormone released by the thyroid gland. Also, write the function of this hormone. Give one of its symptoms.
   II. A florist sprinkled a plant hormone to prevent wilting of leaves. Name the hormones he must have used. 
5. Name the main thinking part of the human brain. List four major functions of this part.
6. Name the plant hormones that promote growth. How do these hormones bring about phototropism in the shoot of a plant?
7. What constituents the central and Peripheral nervous system? How are the components of the central nervous system protected?
8.  What is the function of the midbrain? Name the three different parts of the hindbrain and give one function of each.
9. I. Name two hormones secreted by the pancreas. Write one function of each hormone. 
   II. How does our body respond when adrenaline is secreted into the blood?  Write an example to explain the feedback mechanism for the regulation of hormone secretion.
10. (i) State the function of plant hormones. 
    (ii) Name a plant hormones if it is essential for cell division. 
    (iii) Name the hormone which is involved in photosynthesis. Explain its role.
11. Name the hormone secreted by the thyroid gland and state its function. Why is it important for us to have or iodized salt in our diet? Name the disease caused due to the deficiency of iodine and mention its main symptoms.
12. (i) Name the parts of the brain which control voluntary action, involuntary action.
    (ii) What is the significance of the peripheral nervous system?
    (iii) Name the components of this nervous system and distinguish between the origins of the two.
13. Name various plant hormones. Also, gives their physiological effect on plant growth and development.
14. Draw and label the endocrine gland.
15. Draw and label the part of the neuron.
16. Draw the structure of a neuron and explain its function.
17. Why is the flow of signals in a synapse from the axonal end of one neuron to the dendritic end of another neuron but not the reverse?
18. Explain how the human body responds where adrenaline is secreted into the blood.
19. Mention one role of each of the following:
    (i) Cerebellum for brain (ii) Medulla (iii) Forebrain.                                                  

Chapter 1 - Chemical Reactions and  Equations	Quick View	Questions with Solutions
Chapter 2 - Acid, Bases and Salt	Quick View	Questions with Solutions
Chapter 3 - Metal and Non-metals	Quick View	Questions with Solutions
Chapter 4 - Carbon and it's compound	Quick View	Questions with Solutions
Chapter 5 - Periodic Classification of Elements	Quick View	Questions with Solutions
Chapter 6 - Life Processes	Quick View	Questions with Solutions
Chapter 7 - Control and Co-ordination	Quick View	Questions with Solutions
Chapter 8 - How do Organisms Reproduce?	Quick View	Questions with Solutions
Chapter 9 -  Health and Heredity	Quick View
Chapter 10 -  Reflection and Refraction	Quick View	Questions with Solutions
Chapter 11 -  Human Eye Colourful World	Quick View	Questions with Solutions
Chapter 12 -  Electricity	Quick View	Questions with Solutions
Chapter 13 -  Magnetic Effect of Electric Current	Quick View	Questions with Solutions
Chapter 14 -  Sources of Energy	Quick View
Chapter 15  - Our Environment	Quick View
Chapter 16 - Management of  Natural  Resources	Quick View

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