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Control and Coordination (HBBVS)

Control and Coordination

16 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is/are the example(s) of thigmonasty?

a. Tendrils of a grapevine growing around a bamboo stick
b. Folding of leaves of Mimosa pudica plant on touching
c. Opening of the petals of dandelion flower in the morning

  1. Only a
  2. Both a and b
  3. Only b
  4. Both b and c
  5. Only c
Question 2 Multiple Choice (Single Answer)

______________, a plant hormone, is produced and secreted by the meristematic tissue at the tip of the shoot.

  1. Ethylene
  2. Auxin
  3. Abscisic acid
  4. Cytokinin
  5. Gibberellin
Question 3 Multiple Choice (Single Answer)

Which of the following statements is/are incorrect about auxins?

a. Auxins are responsible for phototropic and geotropic responses in plants.
b. Auxins speed up the growth in stem, but slow down the growth in roots.
c. Auxins promote the opening and closing of stomata.

  1. Only a
  2. Both a and b
  3. Only b
  4. Both b and c
  5. Only c
Question 4 Multiple Choice (Single Answer)

Phototropism is the movement of a plant part in response to light. Which of the following plant hormones causes phototropism?

  1. Gibberllin
  2. Cytokinin
  3. Ethylene
  4. Abscisic acid
  5. Auxin
Question 5 Multiple Choice (Single Answer)

Suraj observed that the petals of moonflower close during the day when there is bright sunlight, but open up at night when it is dark. This movement is an example of

  1. thigmonasty
  2. geotropism
  3. hydrotropism
  4. photonasty
  5. chemotropism
Question 6 Multiple Choice (Single Answer)

Which of the following is the function of synapse in the human nervous system?

  1. It acts as a junction from where impulses are passed to other neurons.
  2. It picks up nerve impulses from receptors.
  3. It acts as an insulator for the axon.
  4. Synapse is the nerve fibre of the neurons.
  5. They contain cytoplasm and nucleus.
Question 7 Multiple Choice (Single Answer)

Which of the following parts of the brain controls the reflex movement of eye muscles, shape of eye lens and size of the pupil?

  1. Midbrain
  2. Cerebrum
  3. Meninges
  4. Cranium
  5. Pons
Question 8 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. The spinal cord is a very thick nerve that runs inside the cavity of backbone in a human body.
b. Autonomic nervous system consists of the brain and spinal cord.
c. Peripheral nervous system controls the voluntary nervous system.

  1. Only a
  2. Both a and b
  3. Only b
  4. Both b and c
  5. Only c
Question 9 Multiple Choice (Single Answer)

Which of the following parts control(s) the heartbeat, breathing, blood pressure and the peristaltic movements of the alimentary canal?

  1. Medulla
  2. Pons
  3. Cerebellum
  4. Cranium
  5. Hypothalamus
Question 10 Multiple Choice (Single Answer)

Match the following:

 
a. Photoreceptors 1. They are present in the skin.
b. Gustatory receptors 2. They are present in the eyes.
c. Thermoreceptors 3. They are present in the tongue.
  1. a - 2, b - 1, c - 3
  2. a - 2, b - 3, c - 1
  3. a - 3, b - 2, c - 1
  4. a - 1, b - 2, c - 3
  5. a - 1, b - 3, c - 2
Question 11 Multiple Choice (Single Answer)

The hindbrain consists of which of the following parts of the brain?

a. Pons
b. Cerebellum
c. Medulla
d. Hypothalamus

  1. only a and b
  2. a, b and d
  3. a, b and c
  4. only c and d
  5. only b and c
Question 12 Multiple Choice (Single Answer)

The ______________ coordinates body activities, so that the mechanisms and chemical reactions of the body work together efficiently.

  1. central nervous system
  2. peripheral nervous system
  3. spinal cord
  4. brain
  5. endocrine system
Question 13 Multiple Choice (Single Answer)

Which of the following statements is correct about the pineal gland?

  1. It regulates the secretion of hormones from the pituitary gland.
  2. It secretes growth hormones that controls the growth of human body.
  3. The pineal gland is a small endocrine gland in the vertebrate brain.
  4. It secretes a hormone that controls the rate of metabolism.
  5. It secretes a hormone that regulates calcium and phosphate levels in blood.
Question 14 Multiple Choice (Single Answer)

Iodine is necessary for the making of _____________ hormone in the human body.

  1. growth
  2. thyroxine
  3. parathoromone
  4. thymus
  5. insulin
Question 15 Multiple Choice (Single Answer)

Which of the following statement is/are incorrect?

a. Parathyroid glands are four small glands that are embedded in the thyroid gland.
b. The function of the parathoromone hormone is to regulate carbohydrate metabolism and blood pressure.
c. Thymus gland is large in young children, but shrinks after puberty.

  1. Only a
  2. Both a and b
  3. Only b
  4. Both b and c
  5. Only c
Question 16 Multiple Choice (Single Answer)

Match the following:

 
a. Sensory neurons 1. They serve as a link between other neurons.
b. Motor neurons 2. They transmit impulses from the central nervous system, i.e. spinal cord and brain towards effectors.
c. Relay neurons 3. They transmit impulses from receptors towards central nervous system, i.e. spinal cord and brain.
  1. a - 3, b - 2, c - 1
  2. a - 3, b - 1, c - 2
  3. a - 1, b - 3, c - 2
  4. a - 2, b - 3, c - 1
  5. a - 1, b - 2, c - 3
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