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.
| 1. |
The junction between two adjacent neurons is called:A. nerve junctionB. sensory junctionC. synapseD. neuro-muscular joint |
| Answer» Correct Answer - C | |
| 2. |
the life process in humans are controlled and regulated by:A. reproductive and endocrine systemsB. respiratory and nervous systemsC. endocrine and digestive systemsD. nervous and endocrine systems |
| Answer» Correct Answer - D | |
| 3. |
In humans, the life processes are controlled and regulated byA. reproductive and endocrine systemsB. respiratory and nervous systemsC. endocrine and digestive systemsD. nervous and endocrine systems |
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Answer» Correct Answer - D In human beings, nervous system and endocrine system work together to control and coordinate all the activities. Both these systems consist of a number of organs that work together in a systematic way. |
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| 4. |
The movement of sunflower in accordance with the path of the sun is due to :A. photonastyB. phototropismC. hydrotropismD. chemotropism |
| Answer» Correct Answer - B | |
| 5. |
The plant hormone which triggers the fall of mature leaves and fruits from the plant body is:A. auxinB. gibberellinC. abscisic acidD. cytokinin |
| Answer» Correct Answer - C | |
| 6. |
The growth of tendril in pea plants is due toA. effect of lightB. effect of gravityC. rapid cell divisions in tendrillar cells that are away from the supportD. rapid cell divisions in tendrillar cells in contact with the support |
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Answer» Correct Answer - C Tendrils are the thin thread-like growths on the sterm or leaves of climbing plants. These are sensitive to touch of other objects .e., thigmotropic). When a tendril touches an object, then the side in contact with object grows slowly than its other side ie, rapid cell divisions in cells that are away from the support). This causes the tendril to bend towards the object by growing towards it, wind around object and cling to it. |
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| 7. |
The climbing organs of plants like tendrils grow towards any suppory which they happen to touch and wind around the support. This is an example of:A. chemotropismB. nastic movementC. thigmotropismD. geotropism |
| Answer» Correct Answer - C | |
| 8. |
Which of the following terms denoted the movement of the root of a plant towards moisture in the soil?A. thigmotropismB. chemotropismC. gravitropismD. phototropism |
| Answer» Correct Answer - C | |
| 9. |
The plant part which exhibits negative geotropism is:A. rootB. stemC. branchD. leaves |
| Answer» Correct Answer - B | |
| 10. |
The growth of tendrils in pea plants is due to the:A. effect of sunlight on the tendril cells facing the sunB. effect of gravity on the part of tendril hanging down towards the earthC. rapid cell division and elongation in tendril cells that are away from the supportD. rapid cell division and elongation in tendril cells in contact with the support |
| Answer» Correct Answer - C | |
| 11. |
The bending of the root of a plant away from a source of light is caused by a plant hormone called:A. abscisic acidB. auxinC. gibberellinsD. cytokinin |
| Answer» Correct Answer - B | |
| 12. |
The growth movement of a plant part in response to the touch of an object is called:A. thigmonastyB. hydrotropismC. thigmotropismD. geotropism |
| Answer» Correct Answer - C | |
| 13. |
A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree grow straight up (vertically). This happens in response to A. water and lightB. water and mineralsC. gravity and waterD. light and gravity |
| Answer» Correct Answer - D | |
| 14. |
The main function of the plant hormone called abscisic acid is to:A. increase the length of cellsB. promote cell divisionC. inhibit growthD. promote growth of stem and roots |
| Answer» Correct Answer - C | |
| 15. |
Which of the following is not caused by a growth movement?A. bending of the shoot of a plant in response to lightB. closing up of leaves of a sensitive plant on touching with an objectC. climbing up of a plant on an object by using tendrilsD. movement of the root of a plant towards a source of water |
| Answer» Correct Answer - B | |
| 16. |
The root of a plant is: (i) positively phototropic but negatively geotropic (ii) positively geotropic but negatively phototropic (iii) negatively phototropic but positively hydrotropic (iv) negatively hydrotropic but positively phototropicA. (i) and (ii)B. (ii) and (iii)C. (iii) and (iv)D. (i) and (iv) |
| Answer» Correct Answer - B | |
| 17. |
The shape of guard cells changes due to change in theA. protein composition of cellsB. temperature of cellsC. amount of water in cellsD. position of nucleus in the cells |
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Answer» Correct Answer - C The shape of guard cells changes due to amount of water in them. The guard cell swell when water flows into them, causing the stomatal pore to open. Similarly, the pore closes if the guard cells shrink, due to the loss of water in then. |
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| 18. |
Goitre results fromA. gibberellinB. iodine deficiencyC. calcium depletionD. thyroid dysfunction |
| Answer» Correct Answer - b,d | |
| 19. |
Giganstism results fromA. growth hormoneB. thyroxineC. adrenalinD. testosterone |
| Answer» Correct Answer - a | |
| 20. |
Dwarfism results due toA. Excess secretion of thyroxinB. Less secretion of growth hormoneC. Less secretion of adrenalineD. Excess secretion of growth hormone |
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Answer» Correct Answer - B Defeciency of growth hormone in childhood causes dwarfism while excessive secretion causes gigantism. Defeciency of thyroxine causes goitre. Adrenaline is secreted in small amounts all the time but is secreted in large amounts to prepare our body for action during flight or fight. |
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| 21. |
In a synapse, chemical signal is transmitted from:A. axon to cell body of the same neuronB. cell body to axon end of the same neuronC. dendrite end of one neuron to axon end of adjacent neuronD. axon end of one neuron to dendrite end of adjacent neuron |
| Answer» Correct Answer - d | |
| 22. |
In a neuron, the conversion of electrical signal to a chemical signal occurs at/in:A. dendrite endB. cell bodyC. axon endD. myelin sheath |
| Answer» Correct Answer - c | |
| 23. |
Which is the correct sequence of the compounds of a reflex arcA. Receptors`to`Muscles `to`Sensory neuron `to`Motor neuron`to` Spinal cordB. Receptors`to` Motor neuron `to`Spinal cord`to` Sensory neuron`to`MuscleC. Receptors`to` Spinal cord`to`Sensory neuron`to` Motor neuron`to` MuscleD. Receptors`to`Sensory neuron `to`Spinal cord`to` Motor neuron `to`Muscle |
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Answer» Correct Answer - D The pathway taken by nerve impulse in a reflex action is called the reflex arc. A reflex action is involuntary action in response to a stimulus.e.g, coughing, sneezing etc it follows a specific pathway as given below Stimulus`to`Receptors`underset("sensory neurons")to`Spinal cord`underset("Motor neurons")tounderset(("Muscle / Gland"))"Effector"to`Response |
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| 24. |
To which of the following directional stimulus roots of a plant do not respons?A. moistureB. candle lightC. touchD. gravity |
| Answer» Correct Answer - C | |
| 25. |
What is reflex action?A. ventral sensory nerve and dorsal motor nerveB. dorsal sensory nerve and ventral motor nerveC. neither of the aboveD. both (a) and (b) |
| Answer» Correct Answer - b | |
| 26. |
One of the following gives the correct sequence of the components in a reflex arc. This is:A. Receptors `rarr` Muscle `rarr` Sensory neuron `rarr` Motor neuron `rarr` Spinal cordB. Receptors `rarr` Motor neuron `rarr` Spinal cord `rarr` Sensory neuron `rarr` MuscleC. Receptors `rarr` Spinal cord `rarr` Sensory neuron `rarr` Motor neuron `rarr` MuscleD. Receptors `rarr` Sensory neuron `rarr` Spinal cord `rarr` Motor neuron `rarr` Muscle |
| Answer» Correct Answer - d | |
| 27. |
Reflex action is controlled mainly by theA. brainB. autonomous nervous systemC. peripheral nervous systemD. spinal cord |
| Answer» Correct Answer - D | |
| 28. |
Which of the following statements are true? (i) sudden action in respons to something in the environment is called reflex action (ii) sensory neurons carry electrical signals from spinal cord to muscles in a reflex action (iii) motor neurons carry signals from receptors to spinal cord in a reflex action (iv) the pathway of transmittin signals from a receptor to a muscle is a reflex actionA. (i) and (ii)B. (i) and (iii)C. (i) and (iv)D. (i),(ii) and (iii) |
| Answer» Correct Answer - c | |
| 29. |
The olfactory receptors in humans are located in:A. eyesB. tongueC. earsD. nose |
| Answer» Correct Answer - d | |
| 30. |
Which of the following statements is correct about receptors?A. gustatory receptors detect taste while olfactory receptors detect smellB. both gustatory and olfactory receptors detect smellC. both gustatory and olfactory receptors detect smellD. auditory receptors detect smell and olfactory receptors detect taste |
| Answer» Correct Answer - a | |
| 31. |
Which of the following statements is correct about receptors?A. Gustatory receptors detect taste while olfactory receptors detect smellB. Both gustatory and olfactory receptors detect smellC. Auditory receptors detect smell and olfactory receptor detect tasteD. Olfactory receptor detect taste and gustatory receptor smell |
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Answer» Correct Answer - A A receptor is a cell (or a group of cells) in a sense organ which is sensitive to a particular type of stimulus such as light, sound, etc. The common type of receptors are (i) Photoreceptors (in eyes) detect light (ii) Gustatory receptors (in tongue) detect taste (iii) Olfactory receptors (in nose) detect smell (iv) Thermoreceptors (in skin) detect heat or cold. |
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| 32. |
The gustatory receptors of our body are in one of the following organs. This organ is:A. earB. noseC. tongueD. skin |
| Answer» Correct Answer - c | |
| 33. |
Most of the plant hormones promote plant growth. A plant hormone which inhibits growth is:A. abscisic acidB. ethyleneC. ascorbic acidD. cytokinin |
| Answer» Correct Answer - A | |
| 34. |
How does our body respond when adrenaline is secreted into the blood? |
| Answer» Adrenaine is secreled directty into the blood and carmed to diferent parts of the body. The target avgans or the specfic tissues on which it acts include the heart. As a result, the heart beats faster resuting in supply of more oxygen to our muscles. The blood to the digestive system and skin is reduced due to contraction of muscles around small artenies in these organs This diverts the blood to our skeletal muscles. The breathing rate also increases because of the contractions of the diaphragm and the rib muscles Al these responses together enable the animal body to be ready to deal with the situation. Such animal hormones are part of the endocrine system which consttutes a second way of control and coordaination in our body | |
| 35. |
Answer the following (a) Name the endocrine gland associated with brain? (b) Which gland secretes digestive enzymes as well as hormones? (c) Name the endocrine gland associated with kidneys? (d) Which endocrine gland is present in males but not in females? |
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Answer» (a) Pituitary Hypothalamus gland present in brain releases hormones that regulate the secretion of pituitary glands. (b) Pancreas It is a digestive gland as well as it secretes the pancreatic juice for digestion of food. It also secretes hormones as insulin. (c) Adrenal Adrenal glands are located on the top of two kidneys. (d) Testes These are the glands which are present only in males and secretes male sex hormone, testosterone. |
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| 36. |
One of the following controls the peristaltic movements of alimentary canal. This one is:A. cerebrumB. cerebellumC. ponsD. medulla |
| Answer» Correct Answer - D | |
| 37. |
The seat of intelligence and voluntary action in the brain is theA. ponsB. cerebellumC. cerebrumD. medulla oblongata |
| Answer» Correct Answer - C | |
| 38. |
The part of brain which controls the involuntary actions such a heart beat, breathing, blood pressure, etc. isA. ponsB. medullaC. cerebrumD. cerebellum |
| Answer» Correct Answer - b | |
| 39. |
Name the part of the brain which controls intelligence. |
| Answer» Correct Answer - Cerebrum | |
| 40. |
What is the need for a system of control and coordination in an organism? |
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Answer» Controlled movement must be connected to the recognition of various event: followed by only the correct movement in response In other words, living organisms must use systems providing control and coordination, In keeping with the general principles of body organisation in Multicelluiar organisms, specialised tissues are used to provide these control and coordination activities (i) Coordination is needed for all human activities like, thinking and behaviour process, hearts beats. we dance, read. write by the action of our nervous system. Our nervous system gets information from surroundings and processes it and then respond according to it The endocrine system (hormonal system) helps in integrating various metabolic activities like reproduction, development, all reflex actions (cope up with various give up situations) Our breathing (ii)The hormonal system in plants helps in process of photosynthesis they need carbon dioxide roots bend towards water and the stem grows towards suniight, the tendrils supported by the hormonal system of the plant body climbing pants are an organisms. Thus. we have need of control and coordination system in an organism |
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| 41. |
The faulty functioning of an endocrine gland can make a person very short or very tall. This gland is:A. thyroidB. pinealC. adrenalD. pituirary |
| Answer» Correct Answer - d | |
| 42. |
Name the hormone produced by the ovaries. |
| Answer» Correct Answer - Oestrogen | |
| 43. |
The hormone responsible for anger isA. adrenalineB. growth hormoneC. oestrogenD. insulin |
| Answer» Correct Answer - a | |
| 44. |
Plant growth is/are promoted byA. cytokininB. auxinC. gibberellinD. abscisic acid |
| Answer» Correct Answer - a,b,c | |
| 45. |
Choose the incorrect statement about insulinA. It is produced from pancreasB. It regulates growth and development of the bodyC. It regulates blood sugar levelD. Insufficient secretion of insulin will cause diabetes |
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Answer» Correct Answer - B Pancreas secrete the hormone insulin. Its function is to regulate blood sugar level. Defeciency of insulin causes a disease known as diabetes that is characterised by large quantities of sugar in blood and even urine. Growth hormone secreted by the pituitary gland regulates growth and development of body. |
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| 46. |
Which is/are correct about insulin ?A. It controls blood sugar.B. It is produced by islets of LangerhansC. It is produced by parathyroid gland.D. It is called the fight and flight hormone. |
| Answer» Correct Answer - a,b | |
| 47. |
Grey matter isA. a fluidB. cluster fo cytonsC. a hormoneD. a network of blood vessel |
| Answer» Correct Answer - b | |
| 48. |
Pineal gland situated on theA. dorsal surface of the hindbrainB. dorsal surface of the forebrainC. ventral surface of the midbrainD. ventral surface of the forebrain |
| Answer» Correct Answer - b | |
| 49. |
Synaptic terminal is the end ofA. cytonB. dendriteC. axonD. none of the above |
| Answer» Correct Answer - c | |
| 50. |
Medulla oblongata isA. a part of the forebrainB. a part of the midbrainC. a part of the hindbrainD. last part of the hindbrain |
| Answer» Correct Answer - d | |