MCQOPTIONS
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MCQOPTIONS
This section includes 517 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In cross-section, gray matter in spinal cord is seen in shape of a |
| A. | tree |
| B. | apple |
| C. | butterfly |
| D. | egg |
| Answer» D. egg | |
| 2. |
Sensory neurons are also known as |
| A. | receptor neurons |
| B. | motor neurons |
| C. | relay neurons |
| D. | effector neurons |
| Answer» B. motor neurons | |
| 3. |
Part of brain which serves as a relay station between body and cerebrum |
| A. | hypothalamus |
| B. | amygdala |
| C. | thalamus |
| D. | cerebellum |
| Answer» D. cerebellum | |
| 4. |
Due to stress, an increased blood flow in brain and muscles can cause |
| A. | painful muscles only |
| B. | headaches only |
| C. | heart attack |
| D. | painful muscles and headaches |
| Answer» E. | |
| 5. |
Characteristics essential for sensitivity includes |
| A. | well developed brain |
| B. | specialized sense organs |
| C. | well developed nervous system |
| D. | all of above |
| Answer» E. | |
| 6. |
Tachycardia is caused due to |
| A. | hypothalamus |
| B. | hypothyroidism |
| C. | hyperthyroidism |
| D. | hyper thalamus |
| Answer» D. hyper thalamus | |
| 7. |
According to classification of glands, Salivary gland is a |
| A. | endocrine gland |
| B. | exocrine gland |
| C. | ectocrine glands |
| D. | hypocrine glands |
| Answer» C. ectocrine glands | |
| 8. |
All are characteristics of energy, but, |
| A. | energy can not be created |
| B. | energy can not be destroyed |
| C. | energy can be converted from one form to the other |
| D. | energy is never lost |
| Answer» E. | |
| 9. |
Blood from posterior part of the body is brought back to the heart through |
| A. | hepatic vein |
| B. | hepatic portal vein |
| C. | inferior vena cava |
| D. | superior vena cava |
| Answer» D. superior vena cava | |
| 10. |
Folds or convolutions in cerebrum are related to |
| A. | memory formation |
| B. | aggression |
| C. | intelligence |
| D. | pleasure |
| Answer» D. pleasure | |
| 11. |
Secondary sexual characteristics in females are caused by |
| A. | androgen |
| B. | oestrogen |
| C. | oxytocin |
| D. | thyroxine |
| Answer» C. oxytocin | |
| 12. |
Tricuspid valve is found between |
| A. | left atrium and right atrium |
| B. | left atrium and right ventricle |
| C. | right atrium and right ventricle |
| D. | left atrium and left ventricle |
| Answer» D. left atrium and left ventricle | |
| 13. |
Jumping impulse at node of ranvier is called |
| A. | saltatory impulse |
| B. | stationary impulse |
| C. | speedy impulse |
| D. | ranvier impulse |
| Answer» B. stationary impulse | |
| 14. |
To start an impulse in next neuron, it may take |
| A. | one impulse from another neuron |
| B. | two-three impulses from another neuron |
| C. | three-four impulses from another neuron |
| D. | five to six impulses from another neuron |
| Answer» C. three-four impulses from another neuron | |
| 15. |
In cardiac system chordae tendineae are found attached to the |
| A. | mitral valve |
| B. | wall of the right ventricle |
| C. | wall of the right atrium |
| D. | wall of left ventricle |
| Answer» C. wall of the right atrium | |
| 16. |
Pericardial fluid is found in |
| A. | cardiovascular system |
| B. | between the two ventricles |
| C. | between the two atriums |
| D. | between the two layers of pericardium |
| Answer» E. | |
| 17. |
Eyes and chemoreceptors are present in |
| A. | planaria |
| B. | hydra |
| C. | plasmodium |
| D. | cortex |
| Answer» B. hydra | |
| 18. |
Special group of cells in pancreas which secrete insulin is called |
| A. | loop of Henle |
| B. | tendon |
| C. | malpighian corpuscle |
| D. | islets of Langerhans |
| Answer» E. | |
| 19. |
Type of behaviour that depends on hereditary material is |
| A. | learning behaviour |
| B. | instinctive behaviour |
| C. | habituation |
| D. | imprinting |
| Answer» C. habituation | |
| 20. |
Oxytocin and antidiuretic hormone after being produced are stored in |
| A. | anterior lobe of pituitary |
| B. | median lobe of pituitary |
| C. | frontal lobe of pituitary |
| D. | posterior lobe of pituitary |
| Answer» E. | |
| 21. |
Thyroid gland is situated below the |
| A. | left kidney |
| B. | larynx |
| C. | trachea |
| D. | lungs |
| Answer» C. trachea | |
| 22. |
No. of lobes of pituitary gland is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 23. |
Olfactory bulbs in telencephalon are concerned with |
| A. | sense of taste |
| B. | sense of smell |
| C. | sense of touch |
| D. | sense of hearing |
| Answer» C. sense of touch | |
| 24. |
Two most important ions in a nerve cell are |
| A. | Cl- and K+ |
| B. | Na+ and K+ |
| C. | Na+ and Fe? |
| D. | Mg+ and H+ |
| Answer» C. Na+ and Fe? | |
| 25. |
Of the total body mass, the heart weighs |
| A. | 0.0039 |
| B. | 0.0049 |
| C. | 0.0059 |
| D. | 0.0069 |
| Answer» D. 0.0069 | |
| 26. |
Long term change controlled by hormones is |
| A. | rate of growth |
| B. | rate of metabolic activity |
| C. | sexual maturity |
| D. | all of the above |
| Answer» E. | |
| 27. |
Somatic nervous system controls |
| A. | voluntary movements |
| B. | reflex actions |
| C. | semi-voluntary movements |
| D. | involuntary movements |
| Answer» B. reflex actions | |
| 28. |
Effective drug for treatment of parkinson's disease is |
| A. | l-dopa |
| B. | m-dopa |
| C. | t-dopa |
| D. | k-dopa |
| Answer» B. m-dopa | |
| 29. |
In transportation of mammals, median septum |
| A. | allows exchange of blood between right and left atrium |
| B. | allows exchange of blood between right and left ventricle |
| C. | is a semi-permeable membrane |
| D. | completely separates the right and left sides of the heart |
| Answer» E. | |
| 30. |
When a receptor is activated, the impulse travels along the |
| A. | receptor neuron |
| B. | effector neuron |
| C. | sphincter muscles |
| D. | pituitary gland |
| Answer» B. effector neuron | |
| 31. |
Functioning of some glands depend upon the |
| A. | age |
| B. | height |
| C. | gender |
| D. | intelligence |
| Answer» B. height | |
| 32. |
Function of cranial nerves includes transmitting of impulses from |
| A. | receptors to motor neurons |
| B. | receptors to forebrain |
| C. | receptors to spinal cord |
| D. | receptors to brain |
| Answer» E. | |
| 33. |
High level of aluminum contributes to onset of |
| A. | epilepsy |
| B. | dementia |
| C. | alzheimer's disease |
| D. | parkinson's disease |
| Answer» D. parkinson's disease | |
| 34. |
Rate of peristalsis increases if the amount of adrenaline in blood is |
| A. | reduced for a shorter period of time |
| B. | increased for a longer period of time |
| C. | reduced for a longer period of time |
| D. | increased for a shorter period of time |
| Answer» C. reduced for a longer period of time | |
| 35. |
Which is right statement in context to production of ketones (R-(C=O)-R) |
| A. | may result in death |
| B. | is due to fat oxidation instead of glucose |
| C. | is due to sugar reduction instead of fats |
| D. | all of above |
| Answer» D. all of above | |
| 36. |
Gland referred to as "Master gland" is |
| A. | Pituitary gland |
| B. | Adrenal gland |
| C. | thyroid gland |
| D. | islets of Langerhans |
| Answer» B. Adrenal gland | |
| 37. |
Right atrium receives blood from |
| A. | pulmonary veins |
| B. | two vena cave |
| C. | right ventricle |
| D. | left ventricle |
| Answer» C. right ventricle | |
| 38. |
Hormones from pituitary gland includes |
| A. | testosterone |
| B. | estrogen |
| C. | progesterone |
| D. | all of above |
| Answer» E. | |
| 39. |
Two hormones produced in hypothalamus are |
| A. | oxytocin and oestrogen |
| B. | oxytocin and testosterone |
| C. | oxytocin and antidiuretic hormone |
| D. | oxytocin and thyroxine |
| Answer» D. oxytocin and thyroxine | |
| 40. |
Alzheimer's disease was first described by alois alzheimer in |
| A. | 1910 |
| B. | 1907 |
| C. | 1906 |
| D. | 1908 |
| Answer» C. 1906 | |
| 41. |
Electrical potential that exists across a cell membrane is called |
| A. | plasma potential |
| B. | membrane potential |
| C. | resting-membrane potential |
| D. | active potential |
| Answer» C. resting-membrane potential | |
| 42. |
Nerves transfer nerve impulses to |
| A. | central nervous system |
| B. | peripheral nervous system |
| C. | spinal nerves |
| D. | sense organs |
| Answer» B. peripheral nervous system | |
| 43. |
Tri-iodothyronine in its structure contains |
| A. | one iodine atom |
| B. | two iodine atoms |
| C. | three iodine atoms |
| D. | four iodine atoms |
| Answer» D. four iodine atoms | |
| 44. |
Receptors which respond to stimuli of light are |
| A. | Mechanoreceptors |
| B. | Photoreceptors |
| C. | Chemoreceptors |
| D. | Nociceptors |
| Answer» C. Chemoreceptors | |
| 45. |
An example of reflexes and instinct is |
| A. | aggression |
| B. | courtship |
| C. | social organizations |
| D. | all of the above |
| Answer» E. | |
| 46. |
Auxins promote cell division in |
| A. | epidermis |
| B. | cortex |
| C. | pith |
| D. | cambium |
| Answer» E. | |
| 47. |
Detection and response to environmental changes occur in plants due to |
| A. | stomata |
| B. | habitat |
| C. | plant growth |
| D. | sensitivity |
| Answer» E. | |
| 48. |
Forebrain does not include |
| A. | Cerebrum |
| B. | cerebellum |
| C. | pituitary gland |
| D. | hypothalamus |
| Answer» C. pituitary gland | |
| 49. |
When the heart relaxes, |
| A. | person respires |
| B. | peristalsis movements occur |
| C. | bile is produced |
| D. | the heart gets filled with blood |
| Answer» E. | |
| 50. |
Hormone that controls release of thyrotrophin releasing factor from hypothalamus is |
| A. | oxytocin |
| B. | thyroxine |
| C. | oestrogen |
| D. | testosterone |
| Answer» C. oestrogen | |