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.
| 451. |
The stages of nitrogen cycles include |
| A. | assimilation |
| B. | denitrification |
| C. | formation of nitrates |
| D. | all of above |
| Answer» E. | |
| 452. |
The insecticide sprays are not used to kill mosquitoes as they cannot penetrate all the habits of |
| A. | adult |
| B. | old |
| C. | young |
| D. | small |
| Answer» B. old | |
| 453. |
The two systems of motor pathways include |
| A. | reflexive nervous system |
| B. | motor nervous system |
| C. | sensory nervous system |
| D. | somatic and autonomic nervous system |
| Answer» E. | |
| 454. |
Which of the following is a link between the nervous system and the endocrine system? |
| A. | midbrain |
| B. | hindbrain |
| C. | hypothalamus |
| D. | thalamus |
| Answer» D. thalamus | |
| 455. |
The colors that cones can recognize are |
| A. | blue, green, red |
| B. | red, brown, green |
| C. | purple, yellow, red |
| D. | black, white, blue |
| Answer» B. red, brown, green | |
| 456. |
Rods are sensitive to |
| A. | dim light |
| B. | bright light |
| C. | dark light |
| D. | shiny light |
| Answer» B. bright light | |
| 457. |
The endocrine cells present in the ductless portion of the pancreas are called |
| A. | islets of Langerhans |
| B. | glucagon |
| C. | estrogen |
| D. | progesterone |
| Answer» B. glucagon | |
| 458. |
Through the pupil, the light passes after striking the |
| A. | cornea |
| B. | choroid |
| C. | pupil |
| D. | iris |
| Answer» B. choroid | |
| 459. |
The anterior part of cerebral hemisphere located in the cerebrum is classified as |
| A. | ganglion bulbs |
| B. | axon bulbs |
| C. | dendrites bulbs |
| D. | olfactory bulbs |
| Answer» E. | |
| 460. |
Rate of reabsorption of water from nephrons is increased by |
| A. | oxytocin |
| B. | vasopressin |
| C. | somatotrophin |
| D. | corticosteroids |
| Answer» C. somatotrophin | |
| 461. |
BGC test is used to measure blood |
| A. | sugar |
| B. | glucose |
| C. | water |
| D. | calcium |
| Answer» C. water | |
| 462. |
The removal of carbon dioxide in young roots is taken place through the |
| A. | stomata |
| B. | root hairs |
| C. | epithelial cells |
| D. | epidermal cells |
| Answer» C. epithelial cells | |
| 463. |
Considering the concave side of human kidneys, the depression near the center is classified as |
| A. | pelvis |
| B. | medulla |
| C. | hilus |
| D. | cortex |
| Answer» D. cortex | |
| 464. |
The plants that remove waste material in the form of mucilage are |
| A. | rubber plant |
| B. | keekar plant |
| C. | coniferous plants |
| D. | carnivorous plants |
| Answer» E. | |
| 465. |
Based on salts and water quotient, the groups in which plants are divided includes |
| A. | hydrophytes |
| B. | xerophytes |
| C. | halophytes |
| D. | all of above |
| Answer» E. | |
| 466. |
Resins are waste materials that are removed by |
| A. | rubber plant |
| B. | keekar |
| C. | ladyfinger |
| D. | coniferous trees |
| Answer» E. | |
| 467. |
Hormones called corticosteroids are secreted by |
| A. | adrenal medulla |
| B. | thyroid gland |
| C. | adrenal cortex |
| D. | parathyroid gland |
| Answer» D. parathyroid gland | |
| 468. |
The fovea is largely responsible for |
| A. | colour vision and sharpness |
| B. | colour blindness |
| C. | blind spot |
| D. | night blindness |
| Answer» B. colour blindness | |
| 469. |
Impulses move from receptors to CNS through |
| A. | sensory pathway |
| B. | motor pathway |
| C. | mixed pathway |
| D. | nerve pathway |
| Answer» B. motor pathway | |
| 470. |
The optic disc is also called |
| A. | fovea |
| B. | optic nerve |
| C. | blind spot |
| D. | black spot |
| Answer» D. black spot | |
| 471. |
The secretions of the pituitary gland are controlled by |
| A. | hypothalamus |
| B. | thalamus |
| C. | hippocampus |
| D. | cerebrum |
| Answer» B. thalamus | |
| 472. |
Guttation, a mechanism for water loss is present in |
| A. | tree |
| B. | herbs |
| C. | shrubs |
| D. | grasses |
| Answer» E. | |
| 473. |
The treatment of end-stage kidney failure is |
| A. | kidney transplant |
| B. | hemodialysis |
| C. | peritoneal dialysis |
| D. | kidney removal |
| Answer» B. hemodialysis | |
| 474. |
Metabolic waste means any material that is produced during |
| A. | oxidation |
| B. | reduction |
| C. | respiration |
| D. | metabolism |
| Answer» E. | |
| 475. |
The pelvis is the base of |
| A. | kidney |
| B. | urethra |
| C. | medulla |
| D. | ureter |
| Answer» E. | |
| 476. |
The water lily is the most common |
| A. | xerophytes |
| B. | mesophytes |
| C. | hydrophytes |
| D. | halophytes |
| Answer» D. halophytes | |
| 477. |
The cartilage protects the trachea from |
| A. | swelling |
| B. | collapsing |
| C. | vibrating |
| D. | breaking |
| Answer» C. vibrating | |
| 478. |
The phases of breathing include |
| A. | inhalation only |
| B. | exhalation only |
| C. | vocal waves |
| D. | inhalation and exhalation |
| Answer» E. | |
| 479. |
The bronchi divide into the lungs and make fine tubes that are known as |
| A. | bronchi |
| B. | bronchioles |
| C. | pharynx duct |
| D. | alveolar ducts |
| Answer» C. pharynx duct | |
| 480. |
The right lung is bigger than the left lung with |
| A. | five lobes |
| B. | three lobes |
| C. | four lobes |
| D. | two lobes |
| Answer» C. four lobes | |
| 481. |
Human breathing rate during hard physical work is |
| A. | 10-15 times per minute |
| B. | 16-20 times per minute |
| C. | 30-40 times per minute |
| D. | 25-30 times per minute |
| Answer» D. 25-30 times per minute | |
| 482. |
The inner cells of leaves are called |
| A. | mesophyll |
| B. | guard cells |
| C. | stomata |
| D. | epidermis |
| Answer» B. guard cells | |
| 483. |
The nasal cavity opens outside of the kind of openings that are called |
| A. | trachea |
| B. | glottis |
| C. | nostrils |
| D. | pharynx |
| Answer» D. pharynx | |
| 484. |
The world No Tobacco Day is celebrated on |
| A. | 31st may |
| B. | 31st April |
| C. | 31st march |
| D. | 31st June |
| Answer» B. 31st April | |
| 485. |
As compared to respiration, the processes involved in the breathing includes |
| A. | bio-chemical processes |
| B. | mechanical processes |
| C. | non-mechanical processes |
| D. | bio-physical processes |
| Answer» D. bio-physical processes | |
| 486. |
A muscular package, common to both food and air is |
| A. | larynx |
| B. | glottis |
| C. | epiglottis |
| D. | pharynx |
| Answer» E. | |
| 487. |
The main goal in the prevention of lung cancer is eliminating |
| A. | pollutants |
| B. | chemicals |
| C. | tobacco smoking |
| D. | harmful gases |
| Answer» D. harmful gases | |
| 488. |
The kind of bronchitis in which inflammation develops in bronchi is called |
| A. | chronic bronchitis |
| B. | coastal bronchitis |
| C. | intercostal bronchitis |
| D. | acute bronchitis |
| Answer» B. coastal bronchitis | |
| 489. |
The percentage of respiratory disorders is high in Pakistan due to more concentration of air |
| A. | chemicals |
| B. | components |
| C. | gases |
| D. | pollution |
| Answer» E. | |
| 490. |
A human breath per minute is |
| A. | 16-30 times |
| B. | 16-20 times |
| C. | 15-20 times |
| D. | 15-18 times |
| Answer» C. 15-20 times | |
| 491. |
The thick muscular structure which is present below the pair of lungs is called |
| A. | epithelial muscles |
| B. | diaphragm |
| C. | intercostal muscles |
| D. | costal muscles |
| Answer» C. intercostal muscles | |
| 492. |
The chronic inflammation lasts for three months to |
| A. | one year |
| B. | three years |
| C. | two years |
| D. | five years |
| Answer» D. five years | |
| 493. |
The flap of tissues which guards the glottis is classified as |
| A. | alveolar ducts |
| B. | alveoli |
| C. | epiglottis |
| D. | voice box |
| Answer» D. voice box | |
| 494. |
Cuticle responsible for gaseous exchange is present |
| A. | over epidermis |
| B. | under epidermis |
| C. | on both sides of epidermis |
| D. | on upper side of epidermis |
| Answer» B. under epidermis | |
| 495. |
The larynx is also called a |
| A. | sound box |
| B. | voice box |
| C. | volume box |
| D. | vibrating box |
| Answer» C. volume box | |
| 496. |
In plants, the certain pores in the bark are called |
| A. | stomata |
| B. | epidermal cells |
| C. | mesophyll cells |
| D. | lenticels |
| Answer» E. | |
| 497. |
The respiratory disorder asthma leads to |
| A. | more mucous production |
| B. | lungs infection |
| C. | destruction of alveoli walls |
| D. | inflammation of bronchi |
| Answer» B. lungs infection | |
| 498. |
The powerful poison, widely used as an insecticide |
| A. | nicotine |
| B. | glucagon |
| C. | nicotinamide |
| D. | histamine |
| Answer» B. glucagon | |
| 499. |
Which of the following is a narrow opening at the floor of the pharynx which leads into larynx? |
| A. | epiglottis |
| B. | glottis |
| C. | oral cavity |
| D. | Oesophagus |
| Answer» C. oral cavity | |
| 500. |
Nostril has mucous which is responsible for |
| A. | filtering of air |
| B. | cleaning of air |
| C. | moisten the air |
| D. | clear the air |
| Answer» D. clear the air | |