MCQOPTIONS
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MCQOPTIONS
This section includes 1844 Mcqs, each offering curated multiple-choice questions to sharpen your Grade10 knowledge and support exam preparation. Choose a topic below to get started.
| 1451. |
The vasopressin hormone secreted by the posterior lobe of the pituitary gland is also known as |
| A. | prolactin hormone |
| B. | lactose hormone |
| C. | antidiuretic hormone |
| D. | diuretic hormone |
| Answer» D. diuretic hormone | |
| 1452. |
Paralysis is caused by damage to the |
| A. | central nervous system |
| B. | nerves |
| C. | neurons |
| D. | muscles |
| Answer» B. nerves | |
| 1453. |
The two types of feedback mechanism are |
| A. | plus and minus |
| B. | above and below |
| C. | positive and negative |
| D. | constructive and destructive |
| Answer» D. constructive and destructive | |
| 1454. |
Glands without duct are called |
| A. | endocrine glands |
| B. | exocrine glands |
| C. | ductless glands |
| D. | ducted glands |
| Answer» B. exocrine glands | |
| 1455. |
Considering the internal structure of the human ear, the center of the inner ear is called |
| A. | incus |
| B. | malleus |
| C. | oval window |
| D. | vestibule |
| Answer» E. | |
| 1456. |
If a person lacks iodine, the thyroid gland will be |
| A. | swell |
| B. | short |
| C. | enlarge |
| D. | damage |
| Answer» D. damage | |
| 1457. |
The size of the pupil is adjusted by |
| A. | ciliary muscles |
| B. | retina |
| C. | eye socket |
| D. | muscles of iris |
| Answer» E. | |
| 1458. |
The interaction between the members of different species is |
| A. | different interaction |
| B. | intraspecific interaction |
| C. | interspecific interaction |
| D. | species interaction |
| Answer» D. species interaction | |
| 1459. |
The example of the parasitic plant is |
| A. | venus fly trap |
| B. | cactus |
| C. | eucalyptus |
| D. | Cuscuta |
| Answer» E. | |
| 1460. |
The types of ecological pyramids are |
| A. | pyramid of biomass |
| B. | pyramid of numbers |
| C. | pyramid of primary consumers |
| D. | all of above |
| Answer» E. | |
| 1461. |
The nitrogen oxides (NO, NO2) and hydrocarbons (alkanes and alkenes) are combined in the sunlight to form |
| A. | carbon monoxide |
| B. | cyanide |
| C. | smog |
| D. | smoke |
| Answer» D. smoke | |
| 1462. |
Secondary carnivores are also called |
| A. | omnivores |
| B. | primary consumers |
| C. | secondary consumers |
| D. | tertiary consumers |
| Answer» E. | |
| 1463. |
The person suffering from the short sight disorder is not able to see the |
| A. | distant objects clearly |
| B. | near objects clearly |
| C. | blue objects clearly |
| D. | red objects clearly |
| Answer» B. near objects clearly | |
| 1464. |
Considering the response of effectors, the long-living and slow response is produced by |
| A. | gland coordination |
| B. | endocrine coordination |
| C. | nervous coordination |
| D. | chemical coordination |
| Answer» E. | |
| 1465. |
The thyroid gland is located |
| A. | below larynx |
| B. | above larynx |
| C. | below Oesophagus |
| D. | near right pair of rib |
| Answer» B. above larynx | |
| 1466. |
Rhodopsin a pigment is present in |
| A. | retina |
| B. | iris |
| C. | cornea |
| D. | rods |
| Answer» E. | |
| 1467. |
The ear is protected from small insects, germs and dust by |
| A. | special fluid |
| B. | pinna |
| C. | tympanum |
| D. | wax and hair |
| Answer» E. | |
| 1468. |
Considering the environment for fertilization, the environment which supports the external environment is |
| A. | aquatic environmentdesert environmentMediterranean environment |
| B. | aquatic environment |
| C. | desert environment |
| D. | Mediterranean environment |
| Answer» C. desert environment | |
| 1469. |
Seed coat develops from |
| A. | testa |
| B. | hilum |
| C. | integument |
| D. | micropyle |
| Answer» D. micropyle | |
| 1470. |
In angiosperms parent plant is |
| A. | haploid sporophyte |
| B. | diploid sporophyte |
| C. | triploid sporophyte |
| D. | diploid gametophyte |
| Answer» C. triploid sporophyte | |
| 1471. |
The part of the embryo of seed which develops into the root is known as |
| A. | hypocotyls |
| B. | radicle |
| C. | Plumule |
| D. | epicotyls |
| Answer» C. Plumule | |
| 1472. |
The point on the seed coat from where the seed is attached to the wall of ovaries is called |
| A. | pollens |
| B. | hilum |
| C. | sporangium duct |
| D. | ovule duct |
| Answer» C. sporangium duct | |
| 1473. |
The over-production of thyroxin hormone than the regular level is called |
| A. | hyperthyroidism |
| B. | goitre |
| C. | hypothyroidism |
| D. | parathyroidism |
| Answer» B. goitre | |
| 1474. |
Considering the external ear structure, the auditory canal of the ear ends into the |
| A. | pinna |
| B. | ear drum |
| C. | cochlea |
| D. | stapes |
| Answer» C. cochlea | |
| 1475. |
The retina is an eye layer that is sensory and |
| A. | middle |
| B. | outer |
| C. | inner |
| D. | single |
| Answer» D. single | |
| 1476. |
The overproduction of thyroxine is |
| A. | hypothyroidism |
| B. | hyperthyroidism |
| C. | goitre |
| D. | dwarfism |
| Answer» C. goitre | |
| 1477. |
Main types of cones are |
| A. | two |
| B. | three |
| C. | four |
| D. | five |
| Answer» C. four | |
| 1478. |
Sensory pathway conducts impulses from |
| A. | receptors to central nervous system |
| B. | central nervous system to effectors |
| C. | glands to effectors |
| D. | glands to receptors |
| Answer» B. central nervous system to effectors | |
| 1479. |
In animals and man, the nervous system is composed of components that includes |
| A. | central nervous system only |
| B. | peripheral nervous system only |
| C. | myelin nervous system |
| D. | central nervous system and peripheral nervous system |
| Answer» E. | |
| 1480. |
Motor functions are controlled by |
| A. | frontal lobe |
| B. | parietal lobe |
| C. | occipital lobe |
| D. | temporal lobe |
| Answer» B. parietal lobe | |
| 1481. |
In the hindbrain, the part of the brain through which the information passes between the brain and spinal cord is called |
| A. | temporal lobe |
| B. | occipital lobe |
| C. | medulla oblongata and pons |
| D. | cerebrum |
| Answer» D. cerebrum | |
| 1482. |
The smallest bone present in the human body is |
| A. | pinna ligament |
| B. | aqueous wax |
| C. | stapes |
| D. | vitreous wax |
| Answer» D. vitreous wax | |
| 1483. |
Through genetic engineering, human insulin is produced from |
| A. | virus |
| B. | bacteria |
| C. | alga |
| D. | fungi |
| Answer» C. alga | |
| 1484. |
The disorder which is caused when cones cannot distinguish between different colors is called |
| A. | short sighted vision disorder |
| B. | color blindness |
| C. | night blindness |
| D. | long sighted vision disorder |
| Answer» C. night blindness | |
| 1485. |
The sensory inner layer of the eye is known as |
| A. | cornea |
| B. | iris |
| C. | sclera |
| D. | retina |
| Answer» E. | |
| 1486. |
Eyes are protected from fine particles by |
| A. | eyelashes |
| B. | eyelids |
| C. | eye layers |
| D. | eye lens |
| Answer» B. eyelids | |
| 1487. |
One of the important hormones of the anterior lobe of the pituitary gland is |
| A. | lactic hormone |
| B. | oxytocin |
| C. | thyroxin |
| D. | somatotrophin |
| Answer» E. | |
| 1488. |
The animals in which reproduction is done by the means of budding are |
| A. | planarian and amoeba |
| B. | hydra and corals |
| C. | amoeba and euglena |
| D. | paramecium and planarian |
| Answer» C. amoeba and euglena | |
| 1489. |
In the cutting method of vegetative propagation, the cuttings are mainly taken from |
| A. | leaves of parent plant |
| B. | roots or stems of parent plant |
| C. | shoots of parent plant |
| D. | buds of parent plant |
| Answer» C. shoots of parent plant | |
| 1490. |
The types of asexual reproduction include |
| A. | binary fission and vegetative propagation |
| B. | budding and fragmentation |
| C. | parthenogenesis |
| D. | all of above |
| Answer» E. | |
| 1491. |
The non-germinating period of seed is |
| A. | seed formation |
| B. | seed dormancy |
| C. | seed growth |
| D. | seed division |
| Answer» C. seed growth | |
| 1492. |
The process of transferring matured pollen grains to the stigma of the plant is called |
| A. | cloning |
| B. | grafting |
| C. | pollination |
| D. | reproduction |
| Answer» D. reproduction | |
| 1493. |
The carnivore animals are classified as |
| A. | assimilators |
| B. | competitors |
| C. | communicators |
| D. | predators |
| Answer» E. | |
| 1494. |
The kind of symbiotic interaction in which both partners reap the benefits and neither is harmed is called |
| A. | parasitism |
| B. | mutualism |
| C. | demonism |
| D. | commensalism |
| Answer» C. demonism | |
| 1495. |
Considering ecosystem components, the ones that depend on consumers and cannot make their food are called |
| A. | consumers |
| B. | producers |
| C. | decomposers |
| D. | detritivores |
| Answer» B. producers | |
| 1496. |
The series of all the organisms within an ecosystem that are fed to the other is classified as |
| A. | web of biotic components |
| B. | ecosystem chain |
| C. | food chain |
| D. | food web |
| Answer» D. food web | |
| 1497. |
The breakdown of complex compounds of animals and plants into other simple compounds is called |
| A. | herbivores |
| B. | decomposers |
| C. | carnivores |
| D. | producers |
| Answer» C. carnivores | |
| 1498. |
The endosperm nucleus of the flower is developed into the |
| A. | seed cell |
| B. | endosperm embryo |
| C. | endosperm nucleus |
| D. | endosperm tissue |
| Answer» E. | |
| 1499. |
The flowers that have small pollen grains are pollinated by |
| A. | humans |
| B. | anthers |
| C. | insects |
| D. | wind |
| Answer» D. wind | |
| 1500. |
The next whorl after the calyx which is bright in color is known as |
| A. | macrospore |
| B. | corolla |
| C. | tube nucleus |
| D. | generative nucleus |
| Answer» C. tube nucleus | |