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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.
| 951. |
After the completion of meiosis-I in primary oocytes, the number of haploid cells produced is |
| A. | 8 |
| B. | 6 |
| C. | 2 |
| D. | 4 |
| Answer» D. 4 | |
| 952. |
The repeat division of cells present in walls of tubules of testes by mitosis leads to the formation of |
| A. | diploid spermatogonia |
| B. | haploid spermatogonia |
| C. | diploid primary spermatocytes |
| D. | diploid secondary spermatocytes |
| Answer» B. haploid spermatogonia | |
| 953. |
The individual units of the corolla (inner whorl) are known as |
| A. | anthers |
| B. | stylus |
| C. | petals |
| D. | sepals |
| Answer» D. sepals | |
| 954. |
The middle part of the carpel is called |
| A. | pistils |
| B. | ovary |
| C. | style |
| D. | stigma |
| Answer» D. stigma | |
| 955. |
The embryonic stem located above the cotyledon attachment point is called |
| A. | hypocotyls |
| B. | radicle |
| C. | Plumule |
| D. | epicotyls |
| Answer» E. | |
| 956. |
The small oval-shaped organs located in the abdominal cavity are called |
| A. | egg cells |
| B. | placenta |
| C. | ovaries |
| D. | horns |
| Answer» D. horns | |
| 957. |
The smaller cell produced by primary oocytes is called |
| A. | first polar body |
| B. | second polar body |
| C. | secondary oocyte |
| D. | territory oocyte |
| Answer» B. second polar body | |
| 958. |
Osteoporosis is more common in |
| A. | old women |
| B. | old men |
| C. | children |
| D. | teenagers |
| Answer» B. old men | |
| 959. |
The function of the tendons is to attach |
| A. | muscles to bones |
| B. | one bone to another joint |
| C. | one muscle to another muscle |
| D. | muscle to hinge joints |
| Answer» B. one bone to another joint | |
| 960. |
One bone is attached to another at joints by |
| A. | tendons |
| B. | ligaments |
| C. | muscles |
| D. | cartilages |
| Answer» C. muscles | |
| 961. |
Soft and porous interior of the bone is called |
| A. | soft bone |
| B. | hard bone |
| C. | compact bone |
| D. | spongy bone |
| Answer» E. | |
| 962. |
The hardest connective tissue in the body is |
| A. | cartilage |
| B. | muscles |
| C. | bone |
| D. | tendons |
| Answer» D. tendons | |
| 963. |
The movement in which a muscle contract and straightens the joint is called |
| A. | flexion |
| B. | extension |
| C. | straightening |
| D. | shrinkage |
| Answer» C. straightening | |
| 964. |
Dense, clear blue-white, firm connective tissue is called |
| A. | bone |
| B. | cartilage |
| C. | firm tissue |
| D. | joint |
| Answer» C. firm tissue | |
| 965. |
One end of skeletal muscles is always attached to |
| A. | moveable bone |
| B. | immoveable bone |
| C. | soft bone |
| D. | hard bone |
| Answer» C. soft bone | |
| 966. |
The hardest connective tissue in our body is called |
| A. | cartilage |
| B. | tendon |
| C. | ligament |
| D. | bone |
| Answer» E. | |
| 967. |
Degeneration in the cartilage present at joints causes |
| A. | osteoarthritis |
| B. | rheumatoid arthritis |
| C. | gout |
| D. | osteoporosis |
| Answer» B. rheumatoid arthritis | |
| 968. |
All are examples of cranial reflexes, but, not |
| A. | salivation |
| B. | scratching |
| C. | blushing |
| D. | sneezing |
| Answer» C. blushing | |
| 969. |
The two points of the retina are called |
| A. | rods and cones |
| B. | cornea and iris |
| C. | anterior chamber and posterior chamber |
| D. | fovea and optic disc |
| Answer» E. | |
| 970. |
When the involuntary response produced by CNS is very quick, it is called |
| A. | reflex arc |
| B. | reflex action |
| C. | sympathetic nervous system |
| D. | parasympathetic nervous system |
| Answer» C. sympathetic nervous system | |
| 971. |
The hormone somatotropin is produced by |
| A. | thyroid gland |
| B. | adrenal gland |
| C. | pancreas |
| D. | pituitary gland |
| Answer» E. | |
| 972. |
The excessive amount of somatotropin leads to the disorder causes tall height is called |
| A. | dwarfism |
| B. | gigantism |
| C. | vasopressin |
| D. | acromegaly |
| Answer» C. vasopressin | |
| 973. |
The vestibule can detect changes in |
| A. | posture of body |
| B. | ear |
| C. | nose |
| D. | mouth |
| Answer» B. ear | |
| 974. |
The sympathetic nervous system is responsible for |
| A. | voluntary actions |
| B. | normalizing all functions |
| C. | "fight or flight" response |
| D. | involuntary actions |
| Answer» D. involuntary actions | |
| 975. |
The less production of thyroxin hormone leads to the disorder known as |
| A. | parathyroidism |
| B. | hypothyroidism |
| C. | hyperthyroidism |
| D. | goitre |
| Answer» C. hyperthyroidism | |
| 976. |
Considering the spinal and cranial nerves, the pathway which conducts impulses to the central nervous system from receptors is classified as |
| A. | temporal |
| B. | parietal |
| C. | sensory |
| D. | motor |
| Answer» D. motor | |
| 977. |
The responses or actions that are uncontrollable by conscious control are classified as |
| A. | involuntary actions |
| B. | voluntary actions |
| C. | sympathetic actions |
| D. | parasympathetic actions |
| Answer» B. voluntary actions | |
| 978. |
The cluster of pouches opened from alveolar ducts is called |
| A. | pulmonary cells |
| B. | alveoli |
| C. | bronchus |
| D. | epithelial cells |
| Answer» C. bronchus | |
| 979. |
The most common cause of cancer-related deaths is |
| A. | kidney cancer |
| B. | liver cancer |
| C. | lung cancer |
| D. | stomach cancer |
| Answer» D. stomach cancer | |
| 980. |
The main cause of lung cancer is |
| A. | pollutants |
| B. | smoking |
| C. | cough |
| D. | fever |
| Answer» C. cough | |
| 981. |
During inspiration the diaphragm is |
| A. | contracted |
| B. | dome shaped |
| C. | relaxed |
| D. | raised |
| Answer» B. dome shaped | |
| 982. |
In nostrils, the substance which moistens and keep the incoming air warm is classified as |
| A. | bronchi |
| B. | larynx |
| C. | mucous |
| D. | glottis |
| Answer» D. glottis | |
| 983. |
The nitric acid (HNO3) and nitrous acid (HNO2) are combined with different salts to produce |
| A. | nitrates |
| B. | nitric acid and hydrogen |
| C. | carbon and oxygen |
| D. | carbon dioxide |
| Answer» B. nitric acid and hydrogen | |
| 984. |
The consumers of an ecosystem are classified as |
| A. | herbivores only |
| B. | carnivores only |
| C. | aquatic carnivores |
| D. | herbivores and carnivores |
| Answer» E. | |
| 985. |
Unwanted, unpleasant sounds are called |
| A. | bad sounds |
| B. | noise |
| C. | unpleasant sounds |
| D. | unwanted sounds |
| Answer» C. unpleasant sounds | |
| 986. |
The perfect biogeochemical cycle is |
| A. | nitrogen cycle |
| B. | sulphur cycle |
| C. | carbon cycle |
| D. | oxygen cycle |
| Answer» D. oxygen cycle | |
| 987. |
For all ecosystems, the major source of energy is |
| A. | galaxies |
| B. | universe |
| C. | sun |
| D. | moon |
| Answer» D. moon | |
| 988. |
The neurons that formed the spinal cord and brain are |
| A. | sensory neurons |
| B. | motor neurons |
| C. | interneurons |
| D. | rotator neurons |
| Answer» D. rotator neurons | |
| 989. |
Auditory reflexes and postures are controlled by |
| A. | forebrain |
| B. | midbrain |
| C. | hindbrain |
| D. | thalamus |
| Answer» C. hindbrain | |
| 990. |
In the human peripheral nervous system, the pairs of cranial nerves are |
| A. | 12 |
| B. | 15 |
| C. | 30 |
| D. | 31 |
| Answer» B. 15 | |
| 991. |
The external ear consists of |
| A. | malleus, incus and stapes |
| B. | vestibule, semicircular canals and cochlea |
| C. | pinna, auditory canal and ear drum |
| D. | Eustachian tube and oval window |
| Answer» D. Eustachian tube and oval window | |
| 992. |
Spinal nerves emerge from the |
| A. | vertebral column |
| B. | spinal cord |
| C. | Medulla Oblongata |
| D. | cerebrum |
| Answer» C. Medulla Oblongata | |
| 993. |
When the circular muscles of the Iris contract, the pupil will |
| A. | dilate |
| B. | shrink |
| C. | swell |
| D. | constricts |
| Answer» E. | |
| 994. |
If somatotropin is excessively produced after growing age, then the condition that occurs is called |
| A. | gigantism |
| B. | acromegaly |
| C. | dwarfism |
| D. | albinism |
| Answer» C. dwarfism | |
| 995. |
In a coordinated action, the common example of receptors is |
| A. | touch and light |
| B. | muscles and glands |
| C. | nose and eyes |
| D. | hormones in blood |
| Answer» D. hormones in blood | |
| 996. |
The thalamus part of the forebrain is involved in |
| A. | emotions |
| B. | consciousness |
| C. | pleasure and sorrow |
| D. | thinking intelligence |
| Answer» C. pleasure and sorrow | |
| 997. |
During expiration, the diaphragm will relax and become |
| A. | dome shaped |
| B. | less dome shaped |
| C. | circular |
| D. | elongated |
| Answer» C. circular | |
| 998. |
Smoking can also cause weakening and staining of |
| A. | hair |
| B. | muscles |
| C. | nails |
| D. | teeth |
| Answer» E. | |
| 999. |
Gaseous exchange in leaves and young stems occurs through |
| A. | lenticels |
| B. | stomata |
| C. | cuticle |
| D. | diffusion |
| Answer» C. cuticle | |
| 1000. |
The alveolus is a sac-like structure, lined by a single layer of |
| A. | cuticular cells |
| B. | epidermal cells |
| C. | epithelial cells |
| D. | internal cells |
| Answer» A. cuticular cells | |