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.
| 451. |
A bridge of nerve fibers which connects two cerebral hemispheres is called |
| A. | corpus leuteum |
| B. | corpus callus |
| C. | corpus callosum |
| D. | corpus scrotum |
| Answer» D. corpus scrotum | |
| 452. |
Experience has an obvious influence on the |
| A. | instinctive behaviour |
| B. | innate behaviour |
| C. | taxes |
| D. | learning behaviour |
| Answer» E. | |
| 453. |
Fibers from eyes terminate in |
| A. | touch area of the brain |
| B. | smell area of the brain |
| C. | Visual Cortex of Brain |
| D. | sound detection region of brain |
| Answer» D. sound detection region of brain | |
| 454. |
A person who forgets name of a neighbor who visits daily might be suffering from |
| A. | alzheimer's disease |
| B. | parkinson's disease |
| C. | epilepsy |
| D. | Genu valgum |
| Answer» B. parkinson's disease | |
| 455. |
Absence of a centralized nervous system in hydra is because of |
| A. | absence of a head |
| B. | absence of a brain |
| C. | absence of a nerve cord |
| D. | all of the above |
| Answer» E. | |
| 456. |
In animal kingdom types of nervous system are |
| A. | one |
| B. | three |
| C. | two |
| D. | four |
| Answer» D. four | |
| 457. |
Thyroxine hormone belongs to family |
| A. | amino acid and derivatives |
| B. | proteins |
| C. | polypeptides |
| D. | steroids |
| Answer» B. proteins | |
| 458. |
Diabetes insipidus is caused by lack of |
| A. | oxytocin |
| B. | thyroxine |
| C. | vasopressin |
| D. | steroids |
| Answer» D. steroids | |
| 459. |
Detection of vibration of ground by terrestrial vertebrates is because of receptors in |
| A. | muscles |
| B. | Joints |
| C. | bones |
| D. | cartilage |
| Answer» C. bones | |
| 460. |
Receptors which produce sensation of pain are |
| A. | Thermoreceptors |
| B. | Chemoreceptors |
| C. | Mechanoreceptors |
| D. | Nociceptors |
| Answer» E. | |
| 461. |
Messages from central nervous system to effector is transferred through |
| A. | sensory neurons |
| B. | motor neurons |
| C. | relay neurons |
| D. | associative neurons |
| Answer» C. relay neurons | |
| 462. |
Hormone production is a function related to |
| A. | hypothalamus |
| B. | pons |
| C. | hippocampus |
| D. | medulla |
| Answer» B. pons | |
| 463. |
Membrane potential of a non-conducting or resting neuron is |
| A. | 70mV |
| B. | 60 mV |
| C. | 50 mv |
| D. | 30 mV |
| Answer» B. 60 mV | |
| 464. |
Dorsal root ganglion is formed through |
| A. | axons only |
| B. | Dendron only |
| C. | a small swelling of neurons |
| D. | myelin sheath |
| Answer» D. myelin sheath | |
| 465. |
Secretin is produced from |
| A. | ileum |
| B. | duodenum |
| C. | rectum |
| D. | jejunum |
| Answer» C. rectum | |
| 466. |
A young bird in absence of parent may imprint |
| A. | other species of birds |
| B. | human beings |
| C. | inanimate objects |
| D. | all of the above |
| Answer» E. | |
| 467. |
Bolting of some rosette plants is promoted by |
| A. | ethane |
| B. | gibberellins |
| C. | auxin |
| D. | Cytokinins |
| Answer» C. auxin | |
| 468. |
All spinal nerves are |
| A. | motor nerves |
| B. | sensory nerves |
| C. | mixed nerves |
| D. | spinal nerves |
| Answer» D. spinal nerves | |
| 469. |
Excess melanophore stimulating hormone is secreted in |
| A. | parkinson's disease |
| B. | alzheimer's disease |
| C. | addison's disease |
| D. | epilepsy |
| Answer» D. epilepsy | |
| 470. |
Both adrenaline and nor-adrenaline are secreted in situations of |
| A. | pleasure |
| B. | hunger |
| C. | stress |
| D. | thirst |
| Answer» D. thirst | |
| 471. |
One of symptoms of diabetes insipidus is |
| A. | great itching |
| B. | nausea |
| C. | great thirst |
| D. | depression |
| Answer» D. depression | |
| 472. |
In a resting neuron, K+ ions are |
| A. | 20 times more inside |
| B. | 20 times more outside |
| C. | 10 times more inside |
| D. | 10 times more outside |
| Answer» B. 20 times more outside | |
| 473. |
Normal speed of nerve impulse in humans is |
| A. | 100 meters per second |
| B. | 200 meters per second |
| C. | 50 meters per second |
| D. | 75 meters per second |
| Answer» B. 200 meters per second | |
| 474. |
Long term memory is formed in |
| A. | amygdala |
| B. | hippocampus |
| C. | thalamus |
| D. | pons |
| Answer» C. thalamus | |
| 475. |
When the left ventricle contracts, blood is carried in to the |
| A. | aortic arch |
| B. | pulmonary arch |
| C. | dorsal aorta |
| D. | inferior vena cava |
| Answer» B. pulmonary arch | |
| 476. |
Trial and error learning is called |
| A. | conditioned reflex type 1 |
| B. | conditioned reflex type 2 |
| C. | latent learning |
| D. | insight learning |
| Answer» C. latent learning | |
| 477. |
An appropriate stimulus which can initiate a nerve impulse is known as |
| A. | powerful stimulus |
| B. | strong stimulus |
| C. | threshold stimulus |
| D. | high-voltage stimulus |
| Answer» D. high-voltage stimulus | |
| 478. |
Substances on which enzymes act are known as |
| A. | prostrate |
| B. | hydrate |
| C. | glucate |
| D. | substrate |
| Answer» E. | |
| 479. |
Neuron has a fiber that carry impulse towards cell body called |
| A. | node |
| B. | Dendron |
| C. | fiber |
| D. | root |
| Answer» C. fiber | |
| 480. |
Gastrin is hormone produced by mucosa of pyloric region of the |
| A. | kidney |
| B. | lungs |
| C. | stomach |
| D. | intestine |
| Answer» D. intestine | |
| 481. |
In humans ,Pancreas is |
| A. | exocrine gland only |
| B. | endocrine gland oly |
| C. | ectocrine gland |
| D. | exocrine and endocrine gland |
| Answer» E. | |
| 482. |
Waste products are egested due to |
| A. | short term effects of stress in body |
| B. | long term effects of stress on body |
| C. | short term hormonal secretions in the body |
| D. | long term nervous impact on the digestive tract |
| Answer» B. long term effects of stress on body | |
| 483. |
Dorsal root of spinal nerve contains |
| A. | receptor neurons |
| B. | effector neurons |
| C. | motor neurons |
| D. | none of others |
| Answer» B. effector neurons | |
| 484. |
Nerve impulse transmitted towards the cell body is through |
| A. | Dendron |
| B. | axon |
| C. | neuron |
| D. | dendrites |
| Answer» B. axon | |
| 485. |
Endocrine system consists of |
| A. | 10 glands |
| B. | 15 glands |
| C. | 20 glands |
| D. | 25 glands |
| Answer» D. 25 glands | |
| 486. |
Glands of internal section are also known as |
| A. | endocrine glands |
| B. | duct glands |
| C. | exocrine glands |
| D. | exocrine glands |
| Answer» B. duct glands | |
| 487. |
Overall control of all voluntary action is gained through |
| A. | medulla oblongata |
| B. | Cerebral hemisphere |
| C. | cerebellum |
| D. | pituitary gland |
| Answer» C. cerebellum | |
| 488. |
Functions of pericardial fluid is to |
| A. | prevent backward flow of blood |
| B. | act as semi lunar cavities |
| C. | support heart while running |
| D. | reduce the friction while heart is beating |
| Answer» E. | |
| 489. |
Relay neuron in spinal cord transmit impulses to |
| A. | spinal nerves |
| B. | spinal cord |
| C. | midbrain |
| D. | cerebral hemisphere |
| Answer» E. | |
| 490. |
Telencephalon and diencephalon are two sub-divisions of |
| A. | mid-brain |
| B. | fore brain |
| C. | hind brain |
| D. | brain |
| Answer» C. hind brain | |
| 491. |
Function of neuroglia is to provide |
| A. | nutrition to neurons |
| B. | nerve impulse to neurons |
| C. | nutrition and protection to neurons |
| D. | only protection to neurons |
| Answer» D. only protection to neurons | |
| 492. |
Secretion of saliva by dogs on ringing bell just before giving them food is an example of |
| A. | conditioning |
| B. | learning |
| C. | taxes |
| D. | imprinting |
| Answer» B. learning | |
| 493. |
Na+ diffusion into neuron causes its membrane to undergo |
| A. | polarization |
| B. | depolarization |
| C. | neutralization |
| D. | semi-polarization |
| Answer» C. neutralization | |
| 494. |
Organic compounds of varying structural complexity poured directly into blood to act on target tissues are |
| A. | hormones |
| B. | enzymes |
| C. | inorganic ions |
| D. | nerve impulses |
| Answer» B. enzymes | |
| 495. |
Simple reflex can be conditioned through |
| A. | inheritance |
| B. | inborn traits |
| C. | some training |
| D. | push ups |
| Answer» D. push ups | |
| 496. |
During breeding condition a male three-spined stickle back fish has a |
| A. | blue belly |
| B. | white belly |
| C. | yellow belly |
| D. | red belly |
| Answer» E. | |
| 497. |
Minimum time required between blood donations is |
| A. | 1 month |
| B. | 3 months |
| C. | 6 months |
| D. | 9 months |
| Answer» C. 6 months | |
| 498. |
Superior vena cava is formed through |
| A. | subclavian vein and jugular vein |
| B. | subclavian vein and hepatic vein |
| C. | pulmonary vein and jugular vein |
| D. | iliac and renal veins |
| Answer» B. subclavian vein and hepatic vein | |
| 499. |
Pairing of an irrelevant stimulus with a natural primary stimulus that elicits an automatic response is |
| A. | habituation |
| B. | imprinting |
| C. | conditioning |
| D. | learning |
| Answer» D. learning | |
| 500. |
Improved storage life of bananas and grape fruits is a commercial application of |
| A. | cytokinins |
| B. | ethane |
| C. | gibberellin |
| D. | auxins |
| Answer» D. auxins | |