InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Mention the number of cranial nerves. |
| Answer» Correct Answer - 12 | |
| 52. |
The plant hormone essential for cell division isA. abscisic acidB. auxinC. gibberellinD. cytokinin |
| Answer» Correct Answer - D | |
| 53. |
The root of a plant isA. positively geotropicB. positively phototropicC. negatively geotropicD. positively thigmotropic |
| Answer» Correct Answer - A | |
| 54. |
Which of these plant hormones is a growth inhibitor?A. GibberellinB. AuxinC. Abscisic acidD. Cytokinin |
| Answer» Correct Answer - C | |
| 55. |
Which of the following is not associated with growth of plant?A. AuxinB. GibberellinsC. CytokininsD. Abscisic acid |
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Answer» Correct Answer - D Abscisic acid is a growth inhibitor hormone. It reverses the growth promoting effects of auxins and gibberellins. It causes dormancy of seeds, wilting of leaves, closing of stomata, etc |
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| 56. |
lodine is necessary for the synthesis of which hormone?A. AdrenalineB. ThyroxinC. AuxinD. Insulin |
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Answer» Correct Answer - B lodine is necessary for the synthesis of thyroxin hormone, defeciency of it in the diet of a person produces less thyroxine hormone and causes a disease known as goitre. The main symptom of goitre is that the neck of the person appears to be swollen (due to the enlargement of thyroid gland situated in the neck). |
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| 57. |
Spinal cord originates fromA. cerebrumB. medullaC. ponsD. cerebellum |
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Answer» Correct Answer - B Spinal cord is a cylindrical structure enclosed ina bony cage called vertebral column. It begins in continuation with medulla and extends downwards. |
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| 58. |
Which of the following statements about transmission of nerve impulse is incorrect ?A. Nerve impulse travels from dendritic end towards axonal endB. At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron.C. The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuronD. A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells |
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Answer» Correct Answer - B The information acquired at the end of the den dritic tip of a neuron causes a chemical reaction that produces an electrical impulse. This impulse travels from dendrite to cellbody and then along axon to its end. |
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| 59. |
Which of the following is not an involuntary action?A. volmitingB. chewingC. heart beatD. salivation |
| Answer» Correct Answer - B | |
| 60. |
The growth of pollen tubes towards ovules is due toA. hydrotropismB. chemotropismC. geotropismD. phototropism |
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Answer» Correct Answer - B The growth of a pollen tube towards ovule is induced by a chemical (sugar) substance secreted by the ripened stigma of flower into the style towards ovary. It is an example of chemotropism, pollen grain responds to stimulus by growing a polen tube in downward direction, towards ovule for fertilisation. |
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| 61. |
The master gland of the body is theA. testisB. pituitaryC. thyroidD. adrenal |
| Answer» Correct Answer - B | |
| 62. |
_____ is the master gland. |
| Answer» Correct Answer - Pituitary | |
| 63. |
Posture and balance of the body is controlled byA. cerebrumB. cerebellumC. medullaD. pons |
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Answer» Correct Answer - B Cerebellum controls the voluntary actions e.g., posture (Also, refer to Q7) |
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| 64. |
Label the part of a neuron in Figure below |
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Answer» (a) Dendrite (b) Cell body (c) Axon (d) Nerve ending |
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| 65. |
Which of the following endocrine glands is unpaired?A. AdrenalB. TestesC. PituitaryD. Ovary |
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Answer» Correct Answer - C There are two adrenal glands, one on top of each kidney that make adrenaline hormone. Testes are paired glands presents in males, secretes male sex hormone. Pituitary gland is present just below the brain and is unpaired. It is also called master gland as it secretes a number of hormones. Ovaries are paired glands present in females, secretes female sex hormones |
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| 66. |
What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs? |
| Answer» The movement in the leaves of a senstitive plant takes place due to the sudden loss of water in the pad-like swellings (called pulvini) at the base of all the leaves. The loss of water makes the pulvini limp leading to drooping and folding of leaves. On the other hand, the movement in our legs takes place when the leg muscles pull on the leg bones. | |
| 67. |
Which of the following statements are true about the brain? (i) The main thinking part of brain is hind brain. (ii) Centres of hearing, smell, memory, sight, etc., are located in fore brain (iii) Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hind brain. (iv) Cerebellum does not control posture and balance of the body.A. The main thinking part of brain is hind brainB. Centres of hearing, smell, memory, sight, etc., are located in fore brain.C. Involuntary actions like salivation,vomiting, blood pressure controlled by the medulla in the hind brain.D. Cerebellum does not control posture and balance of the body. |
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Answer» Correct Answer - C The cerebrum (part of forebrain) is the main thinking part of the brain. It coordinates the voluntary actions of the body. It has different areas for performing functions such as centres of hearing, smell ,meamory, etc. The hindbrain consists of pons (takes part in regulating respiration), cerebellum (helps in maintaining posture and balance of body) and medulla that controls involuntary actions such as breathing etc. The midbrain controls reflex movements. |
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| 68. |
Give an example of a plant hormone that promotes growth. |
| Answer» Correct Answer - Auxin | |
| 69. |
The number of pairs of nerves which arises from the spinal cord is:A. 21B. 31C. 41D. 51 |
| Answer» Correct Answer - B | |
| 70. |
Cerebellum, medulla and pons are the parts of:A. mid-brainB. hind-brainC. forebrainD. spinal cord |
| Answer» Correct Answer - B | |
| 71. |
The spinal cord orginates from:A. cerebrumB. cerebellumC. medullaD. pons |
| Answer» Correct Answer - C | |
| 72. |
Iodine in necessary for the synthesis of which of the following hormone?A. adrenalineB. auxinC. thyroxineD. insulin |
| Answer» Correct Answer - C | |
| 73. |
One of the following is an incorrect statement about insulin. This is:A. it is produced in pancreasB. it regulates growth and development of the bodyC. it regulates blood glucose level in the bloodD. its deficiency in the body will cause diabetes |
| Answer» Correct Answer - B | |
| 74. |
Select the mis-matched pairA. Adrenaline-Pituitary glandB. Testosterone-TestesC. Estrogen-OvaryD. Thyroxin-Thyroid gland |
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Answer» Correct Answer - A Adrenaline is secreted by the adrenal glands, located on top of kidneys. Growth hormone is secreted by the pituitary gland. |
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| 75. |
Which of the following is a mis-matched pair?A. adrenaline: pituitary glandB. estrogen: ovaryC. pancreas: insulinD. progesterone: ovary |
| Answer» Correct Answer - A | |
| 76. |
When the leaves of a Mimosa pudica plant are touched with a finger, they fold up quickly. This is an example of:A. chemotropismB. thigmonastyC. photonastyD. thigmotropism |
| Answer» Correct Answer - B | |
| 77. |
The endocrine gland whose malfunctioning causes diabetes disease is:A. pituiaryB. pinealC. parathyroidD. pancreas |
| Answer» Correct Answer - d | |
| 78. |
The use of iodised salt is recommended to prevent:A. diabetesB. gonorrhoeaC. dysenteryD. goitre |
| Answer» Correct Answer - d | |
| 79. |
Why is the use of iodised salt advisable |
| Answer» Iodine is necessary for the thyroid gland to make thyroxin hormone. Thyroxin regulates carbohydrate, protein and tat, metabolism in the body so as to provide the best balance for growth Iodine is essential for the synthesis of thyroxin. In case iodine is deficient in our diet, there is a possibility that wnight suffer from goitre. One of the symptoms in this disease is a swollen neck | |
| 80. |
How does chemical coordination take place in animals? |
| Answer» The chemical coordination in animals lakes place by the action of chemical called hormones They are produced in certain glands in body in very small amount and poured direcly in the blood They are target based means works on particular organs and these organs are called larget organs. The normones control and coordinate vanious functions of the body such as development, growth, sexual changes etc | |
| 81. |
How does chemical coordination occur in plants? |
| Answer» Plants do not have nervous system but still sense the things because of stimulus such as gravity light, chemicals(hormones), water, touch (touch -me -not plant).Hormones are responsible for the chemical coordination of plants by integrating their behaviour by affecting growth of a plant resulting in movement of that plant part in response to a stimulus. When sunlight falls on the side, the auxins hormone causes the shady side of the shoot to grow faster, making the towards sunlight | |
| 82. |
Which of the following is not an involuntary action?A. VomitingB. SalivationC. Heart beatD. Chewing |
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Answer» Correct Answer - D Involuntary actions are those actions that are not under our direct control such as heart beat, breathing, peristatic movenents, etc. These are controlled by medulla. Chewing is under voluntary control and controlled by lobes present in cerebral cortex. |
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| 83. |
What is the correct direction of flow of electrical impulses?A. B. C. D. |
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Answer» Correct Answer - C Direction of flow of electrical impulse Impulse`to`Dendrite`to`Cell body`to`Axon`to`Release of chemicals that cross synapse`to`Uendrite of next neuron |
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| 84. |
The brain is responsible forA. thinkingB. regulating the heart beatC. balancing the bodyD. all of the above |
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Answer» Correct Answer - D all of the above |
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| 85. |
The brain is responsible forA. thinkingB. regulating the heart beatC. balancing the body.D. all of the above |
| Answer» Correct Answer - all of the above | |
| 86. |
The fluid that lies above and below the meninges of the brain is caledA. lymphB. serumC. plasmaD. cerbrospinal fluid |
| Answer» Correct Answer - d | |
| 87. |
A growing seedling is kept in a dark room. A burning candle is placed near it for a few days. The top part of seedling bends towards the burning candle. This is an example of:A. chemotropismB. hydrotropismC. phototropismD. geotropism |
| Answer» Correct Answer - C | |
| 88. |
In figure (a), (b) and (c), which appears more accurate and why? |
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Answer» Figure (a) is more accurate. The roots of a plant always grow downwards in response the gravity to make sure they find soil and water. On the other hand, the stem always grows up away from gravity pull to make sure they will get light. Both these conditions are shown in figure (a). |
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