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.
| 651. |
An oval window that separates the middle ear is a |
| A. | gland |
| B. | membrane |
| C. | flap |
| D. | hormone |
| Answer» C. flap | |
| 652. |
Cerebrospinal fluid is the fluid within |
| A. | cerebrum |
| B. | cerebellum |
| C. | spinal cord |
| D. | ventricles and central canal |
| Answer» E. | |
| 653. |
The thin membrane separates the external ear from the middle ear |
| A. | pinna |
| B. | cochlea |
| C. | retina |
| D. | ear drum |
| Answer» E. | |
| 654. |
The point where there are no rods and cones is called |
| A. | white spot |
| B. | blind spot |
| C. | color spot |
| D. | dark spot |
| Answer» C. color spot | |
| 655. |
The function of meninges is to protect |
| A. | lungs |
| B. | liver |
| C. | heart |
| D. | brain |
| Answer» E. | |
| 656. |
Male reproductive part of the flower is called |
| A. | calyx |
| B. | corolla |
| C. | androecium |
| D. | gynoecium |
| Answer» D. gynoecium | |
| 657. |
Pollination and fertilization in flowers was described by |
| A. | Aristotle |
| B. | Plato |
| C. | Theophrastus |
| D. | none of above |
| Answer» D. none of above | |
| 658. |
The method in which vegetative cells or tissues are used to produce identical offspring from the single parent is called |
| A. | shoots culture |
| B. | nodes culture |
| C. | tube culture |
| D. | tissue culture |
| Answer» E. | |
| 659. |
In rhizomes, the lower surface is responsible for the production of |
| A. | adventitious shoots |
| B. | adventitious buds |
| C. | adventitious roots |
| D. | adventitious stems |
| Answer» D. adventitious stems | |
| 660. |
Considering the sexual reproduction in flowering petals, the birds and bees are classified as agents of |
| A. | reproduction |
| B. | cloning |
| C. | grafting |
| D. | pollination |
| Answer» E. | |
| 661. |
The persons suffering from chronic bronchitis at the age |
| A. | 42 |
| B. | 44 |
| C. | 43 |
| D. | 45 |
| Answer» E. | |
| 662. |
The voice box leads to the trachea which is also known as |
| A. | windpipe |
| B. | alveoli pipe |
| C. | glottis pipe |
| D. | pharynx pipe |
| Answer» B. alveoli pipe | |
| 663. |
The process of intake of oxygen and release of carbon dioxide is classified as |
| A. | gaseous exchange |
| B. | respiratory exchange |
| C. | cellular respiration |
| D. | osmosis |
| Answer» B. respiratory exchange | |
| 664. |
The respiratory disorder in which the walls of alveoli is destructed is called |
| A. | asthma |
| B. | emphysema |
| C. | bronchitis |
| D. | pneumonia |
| Answer» C. bronchitis | |
| 665. |
The respiratory disorder in which cells division takes place without any control and causes tumors is called |
| A. | emphysema |
| B. | lung cancer |
| C. | bronchi cancer |
| D. | bronchioles cancer |
| Answer» C. bronchi cancer | |
| 666. |
In a coordinated action, the action performed by effectors after receiving a message from coordinators is classified as |
| A. | endocrine coordination |
| B. | response |
| C. | nerve impulse |
| D. | spinal coordination |
| Answer» C. nerve impulse | |
| 667. |
A round hole called pupil present in the center of |
| A. | choroid |
| B. | cornea |
| C. | iris |
| D. | sclera |
| Answer» D. sclera | |
| 668. |
The deficiency of vitamin A in the human body leads to poor |
| A. | day vision |
| B. | color recognition |
| C. | night vision |
| D. | depth recognition |
| Answer» D. depth recognition | |
| 669. |
The peripheral nervous system consists of |
| A. | brain |
| B. | nerves |
| C. | spinal cord |
| D. | glands |
| Answer» C. spinal cord | |
| 670. |
In the disorders of the eyes, the myopia is caused by |
| A. | elongation of eyeball |
| B. | shortness of eyeball |
| C. | shrinkage of iodopsin |
| D. | shrinkage of rhodopsin |
| Answer» B. shortness of eyeball | |
| 671. |
The special cells, organs, and tissues in the body that detects different stimulus are classified as |
| A. | stimuli |
| B. | receptors |
| C. | coordinators |
| D. | effectors |
| Answer» C. coordinators | |
| 672. |
Under-production of thyroxin causes |
| A. | hypothyroidism |
| B. | hyperthyroidism |
| C. | goitre |
| D. | acromegaly |
| Answer» B. hyperthyroidism | |
| 673. |
The part of the inner ear which is made up of three ducts and is wrapped into the coiled tube is called |
| A. | stapes |
| B. | cochlea |
| C. | pinna |
| D. | malleus and incus |
| Answer» C. pinna | |
| 674. |
When ciliary muscles are relaxed, the lens becomes |
| A. | more convex |
| B. | less convex |
| C. | round |
| D. | remains same |
| Answer» C. round | |
| 675. |
Brain tumors most likely to cause epilepsy in people at the age |
| A. | over 40 |
| B. | 40 |
| C. | over 50 |
| D. | 50 |
| Answer» B. 40 | |
| 676. |
Disorders caused due to any disturbance in the blood supply to the nervous system are called |
| A. | blood disorder |
| B. | blood vessel disorder |
| C. | nervous disorder |
| D. | vascular disorder |
| Answer» E. | |
| 677. |
Considering the lobes of the cerebral cortex, the lobe which is responsible for receiving impulses from the skin is called |
| A. | temporal lobe |
| B. | parietal lobe |
| C. | frontal lobe |
| D. | occipital lobe |
| Answer» C. frontal lobe | |
| 678. |
The regulation of reproduction, growth, the concentration of glucose in blood and reabsorption of water are all the tasks carried by |
| A. | endocrine glands |
| B. | semicircular glands |
| C. | rhodopsin glands |
| D. | iodopsin glands |
| Answer» B. semicircular glands | |
| 679. |
In interneurons, the number of dendrites and axons are |
| A. | two |
| B. | many |
| C. | three |
| D. | four |
| Answer» C. three | |
| 680. |
Gout generally attacks |
| A. | hip joint |
| B. | neck joint |
| C. | shoulder joint |
| D. | toe joint |
| Answer» E. | |
| 681. |
The inner part of the bone which is porous and soft is called |
| A. | spongy bones |
| B. | compact bones |
| C. | connecting bones |
| D. | protective bones |
| Answer» B. compact bones | |
| 682. |
How many bones are present in the legs? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 683. |
The examples of fixed joints are the joints between the |
| A. | ear ossicles |
| B. | invertebral discs |
| C. | vertebrae |
| D. | skull bones |
| Answer» E. | |
| 684. |
The muscle that contracts and bends the joint is called |
| A. | flexor muscle |
| B. | bending muscle |
| C. | extensor muscle |
| D. | skeletal muscle |
| Answer» B. bending muscle | |
| 685. |
The ultraviolet rays in the radiations of the sun are absorbed by |
| A. | troposphere |
| B. | thermosphere |
| C. | stratosphere |
| D. | ozone |
| Answer» E. | |
| 686. |
The ecological pyramid concept was proposed by Charles Elton in |
| A. | 1927 |
| B. | 1930 |
| C. | 1935 |
| D. | 1938 |
| Answer» B. 1930 | |
| 687. |
The excess burning of fossil fuels leads to increased carbon dioxide which results in |
| A. | greenhouse effect only |
| B. | global warming only |
| C. | acidic rain |
| D. | green house effect and global warming |
| Answer» E. | |
| 688. |
The organisms who kills, attacks and feeds others are called |
| A. | prey |
| B. | predators |
| C. | assimilators |
| D. | competitors |
| Answer» C. assimilators | |
| 689. |
Nitrogen fixation is the conversion of nitrogen gas to |
| A. | nitrates |
| B. | nitrites |
| C. | nitric acid |
| D. | nitric oxide |
| Answer» B. nitrites | |
| 690. |
The dip in the retina which is packed with the cone cells and is located opposite to the lens is called |
| A. | cornea disc |
| B. | choroid disc |
| C. | optical disc |
| D. | fovea |
| Answer» E. | |
| 691. |
The Pons which is part of the medulla of hindbrain coordinates |
| A. | controls emotions and thinking |
| B. | controls rage and pain |
| C. | controls vomiting and coughing |
| D. | breathing |
| Answer» E. | |
| 692. |
The fatty layer secreted by Schwann cells is classified as |
| A. | malign coating |
| B. | Schwann coating |
| C. | ranvier sheath |
| D. | myelin sheath |
| Answer» E. | |
| 693. |
The forebrain is highly developed in |
| A. | humans |
| B. | birds |
| C. | animals |
| D. | reptiles |
| Answer» E. | |
| 694. |
In bright light, pupil |
| A. | dilates |
| B. | constricts |
| C. | remains same |
| D. | none of above |
| Answer» C. remains same | |
| 695. |
In the human body, the largest endocrine gland is called |
| A. | parathyroid gland |
| B. | thyroid gland |
| C. | pituitary gland |
| D. | adrenal gland |
| Answer» C. pituitary gland | |
| 696. |
The broad external part of the ear that directs sound waves in the auditory canal is called |
| A. | ear drum |
| B. | pinna |
| C. | vestibule |
| D. | cochlea |
| Answer» C. vestibule | |
| 697. |
In the cerebral cortex, the myelinated axons are present in |
| A. | pink matter |
| B. | purple matter |
| C. | white matter |
| D. | grey matter |
| Answer» D. grey matter | |
| 698. |
The fluid contained by the anterior chamber of the eye is called |
| A. | aqueous humor |
| B. | vitreous humor |
| C. | tears |
| D. | macula |
| Answer» B. vitreous humor | |
| 699. |
Vitreous humor maintains the eye |
| A. | colour |
| B. | length |
| C. | shape |
| D. | diameter |
| Answer» D. diameter | |
| 700. |
The process of gametes formation is called |
| A. | primary oogonia |
| B. | gametogenesis |
| C. | cogenesis |
| D. | spermatogenesis |
| Answer» C. cogenesis | |