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.
| 1651. |
The chlorine, smoke, dust, cotton, and nitrogen oxides are pollutants released by |
| A. | fertilizer industries |
| B. | thermal industries |
| C. | textile industries |
| D. | steel industries |
| Answer» D. steel industries | |
| 1652. |
The graphic representation of the number of individuals per unit area is |
| A. | pyramids of individual |
| B. | pyramids of population |
| C. | pyramids of community |
| D. | pyramids of numbers |
| Answer» E. | |
| 1653. |
Ovaries are situated just ventral to |
| A. | uterus |
| B. | urinary bladder |
| C. | kidneys |
| D. | lungs |
| Answer» D. lungs | |
| 1654. |
The plants whose seeds are germinated by following the hypogeal germination are |
| A. | beans and cotton |
| B. | sugarcane and papaya |
| C. | coconut and maize |
| D. | cotton and jute |
| Answer» D. cotton and jute | |
| 1655. |
The method of asexual reproduction which occurs in protozoa and bacteria is known as |
| A. | spore formation |
| B. | fragmentation |
| C. | binary fission |
| D. | budding |
| Answer» D. budding | |
| 1656. |
Considering the wind-pollinated and insect-pollinated flowers, the flowers that are pollinated by insects |
| A. | produce nectar |
| B. | do not produce nectar |
| C. | are small in size |
| D. | have feathery branches |
| Answer» B. do not produce nectar | |
| 1657. |
Considering sexual reproduction in animals, the female gonads are known as |
| A. | oocytes |
| B. | testes |
| C. | ovaries |
| D. | sperms |
| Answer» D. sperms | |
| 1658. |
The basic unit of inheritance is |
| A. | nucleic acid |
| B. | ribonucleic acid (RNA) |
| C. | chromosome |
| D. | gene |
| Answer» E. | |
| 1659. |
How many hydrogen bonds are present between adenine and thymine? |
| A. | one |
| B. | two |
| C. | three |
| D. | four |
| Answer» C. three | |
| 1660. |
The examples of deviations from laws of inheritance proposed by Mendel includes |
| A. | evolutionary dominance only |
| B. | incomplete dominance only |
| C. | co-dominance |
| D. | evolutionary and incomplete dominance |
| Answer» E. | |
| 1661. |
The theory of natural selection was proposed by |
| A. | Darwin |
| B. | Mendel |
| C. | C.D Buffen |
| D. | Lamark |
| Answer» B. Mendel | |
| 1662. |
Considering the Deoxyribonucleic Acid (DNA) structure, the inside basis of the double helix is made up of |
| A. | nitrogen |
| B. | oxygen |
| C. | phosphorus |
| D. | magnesium |
| Answer» B. oxygen | |
| 1663. |
The representation of biomass for per unit area at various trophic levels graphically is classified as |
| A. | pyramid of numbers |
| B. | pyramid of primary consumers |
| C. | pyramid of biomass |
| D. | pyramid of decomposers |
| Answer» D. pyramid of decomposers | |
| 1664. |
The coal burning in the air leads to |
| A. | oxygen and sulphur dioxide |
| B. | methane and nitrogen dioxide |
| C. | dust and nitrogen |
| D. | dust and smoke |
| Answer» E. | |
| 1665. |
The representation of biomass energy present in different levels of the food chain is classified as |
| A. | food chain pyramid |
| B. | food web pyramid |
| C. | biomass pyramid |
| D. | ecological pyramid |
| Answer» E. | |
| 1666. |
The process in which there is the utilization of nitrates by organisms is called |
| A. | assimilation |
| B. | denitrification |
| C. | ammonification |
| D. | nitrification |
| Answer» B. denitrification | |
| 1667. |
The process which converts the nitrogen gas into the nitrates is called |
| A. | carbon fixation |
| B. | nitrogen fixation |
| C. | oxygen fixation |
| D. | nitrate fixation |
| Answer» C. oxygen fixation | |
| 1668. |
The law which states that energy is only transformed from one state into another and it is never destroyed nor created is called |
| A. | law of momentum |
| B. | law of nuclear fission |
| C. | law of kinematics |
| D. | law of thermodynamics |
| Answer» E. | |
| 1669. |
The process of nitrates utilization by organisms is classified as |
| A. | assimilation |
| B. | nitrification |
| C. | denitrification |
| D. | ammonification |
| Answer» B. nitrification | |
| 1670. |
The constant flow of energy is from producer to |
| A. | consumer |
| B. | producer |
| C. | herbivores |
| D. | carnivores |
| Answer» B. producer | |
| 1671. |
Pakistan developed the National conservation strategy in |
| A. | 1990 |
| B. | 1991 |
| C. | 1993 |
| D. | 1992 |
| Answer» E. | |
| 1672. |
Intergovernmental Panel on Climate Change (IPCC) was established in |
| A. | 1980 |
| B. | 1970 |
| C. | 1950 |
| D. | 1990 |
| Answer» E. | |
| 1673. |
The level at which an organism feeds in a food chain is called |
| A. | trophic level |
| B. | food level |
| C. | food chain level |
| D. | ecology niche |
| Answer» B. food level | |
| 1674. |
The process of conversion of oxides of nitrogen into nitric acid and then into nitrates is classified as |
| A. | atmospheric oxygen fixation |
| B. | atmospheric nitrogen fixation |
| C. | biological nitrogen fixation |
| D. | biological oxygen fixation |
| Answer» C. biological nitrogen fixation | |
| 1675. |
Predation helps to maintain balance in |
| A. | community |
| B. | population |
| C. | ecology |
| D. | ecosystem |
| Answer» D. ecosystem | |
| 1676. |
The carbon atom is the principal building block of many kinds of |
| A. | bio nutrients |
| B. | bio cells |
| C. | bio cycles |
| D. | biomolecules |
| Answer» E. | |
| 1677. |
Pitcher plant, Sundew are common examples of |
| A. | omnivores |
| B. | carnivores |
| C. | herbivores |
| D. | scavengers |
| Answer» C. herbivores | |
| 1678. |
The cyclic pathways through which materials move back from the environment to organisms and organisms to the environment are called |
| A. | chemical cycles |
| B. | biosphere cycles |
| C. | geological cycles |
| D. | biogeochemical cycles |
| Answer» E. | |
| 1679. |
The network of food chains that are interconnected with each other at different trophic levels is called |
| A. | biogeochemical chain |
| B. | food web |
| C. | food chain |
| D. | biomass chain |
| Answer» C. food chain | |
| 1680. |
Reproduction is a basic survival for |
| A. | nitrogen |
| B. | nitrates |
| C. | nitric acid |
| D. | nitrites |
| Answer» C. nitric acid | |
| 1681. |
The process of photosynthesis converts solar energy into the |
| A. | hydro energy |
| B. | chemical energy |
| C. | mechanical energy |
| D. | tidal energy |
| Answer» C. mechanical energy | |
| 1682. |
The carbon dioxide (CO2) taken by the producers from the atmosphere is converted into |
| A. | primary compounds |
| B. | organic compounds |
| C. | inorganic compounds |
| D. | terrestrial compounds |
| Answer» C. inorganic compounds | |
| 1683. |
Aspergillus is used to produce |
| A. | ethanol |
| B. | glycerol |
| C. | acrylic acid |
| D. | formic acid |
| Answer» E. | |
| 1684. |
In the first step of genetic engineering, the special enzymes that are used to separate identified gene are called |
| A. | expressed nucleases |
| B. | inserted nucleases |
| C. | restriction end nucleases |
| D. | isolated nucleases |
| Answer» D. isolated nucleases | |
| 1685. |
The restriction endonucleases enzyme is used to |
| A. | cut the gene |
| B. | ligase the gene |
| C. | multiply the gene |
| D. | copy the gene |
| Answer» B. ligase the gene | |
| 1686. |
The particular enzyme produced by genetic engineering which is used to dissolve clots of blood is called |
| A. | interferon |
| B. | urokinase |
| C. | Thymosin |
| D. | beta-endorphin |
| Answer» C. Thymosin | |
| 1687. |
Which of the following microorganisms is used for the production of Acrylic acid |
| A. | aspergillus |
| B. | saccharomyces |
| C. | bacillus |
| D. | archaea |
| Answer» D. archaea | |
| 1688. |
In most fungi, the thick-walled spore sacs called |
| A. | spore sacs |
| B. | sporangia |
| C. | Sporophore |
| D. | spore cells |
| Answer» C. Sporophore | |
| 1689. |
After maturation, the sperms move from the epididymis to |
| A. | testis |
| B. | collecting duct |
| C. | seminal vesicles |
| D. | vas deferens |
| Answer» E. | |
| 1690. |
The changes occurred in non-motile spermatids converts the spermatids into |
| A. | chromosome |
| B. | acrosome |
| C. | hostile cells |
| D. | motile cells |
| Answer» E. | |
| 1691. |
The flower components are arranged in the form of |
| A. | whorls |
| B. | petals |
| C. | sepals |
| D. | stems |
| Answer» B. petals | |
| 1692. |
The types of reproduction include |
| A. | asexual reproduction only |
| B. | sexual reproduction only |
| C. | fragmented reproduction |
| D. | asexual reproduction and sexual reproduction |
| Answer» E. | |
| 1693. |
All are the functions of the hypothalamus, but not regulation of |
| A. | body temperature |
| B. | anti-diuretic hormones |
| C. | sleep and emotions |
| D. | blood osmotic pressure |
| Answer» C. sleep and emotions | |
| 1694. |
The part or region of the forebrain which lies just below the thalamus and is the size of almond is classified as |
| A. | hypothalamus |
| B. | thalamus |
| C. | cerebellum |
| D. | cerebrum |
| Answer» B. thalamus | |
| 1695. |
The white color of the eye is because of |
| A. | pupil |
| B. | sclera |
| C. | cornea |
| D. | choroid |
| Answer» C. cornea | |
| 1696. |
Which of the following form brain and spinal cord? |
| A. | sensory neurons |
| B. | motor neurons |
| C. | inter neurons |
| D. | dendrites |
| Answer» D. dendrites | |
| 1697. |
The relay center between various parts of the brain and spinal cord is called |
| A. | hypothalamus |
| B. | thalamus |
| C. | mid brain |
| D. | hind brain |
| Answer» C. mid brain | |
| 1698. |
After the production of embryo and endosperm tissue, the ovule turns into |
| A. | stems |
| B. | roots |
| C. | seed |
| D. | fruit |
| Answer» D. fruit | |
| 1699. |
The way of vegetative propagation in which fleshy and thick leaves surrounds the short underground stems is classified as |
| A. | corms |
| B. | rhizomes |
| C. | root tubers |
| D. | bulbs |
| Answer» E. | |
| 1700. |
A scar on seed coat is called |
| A. | Plumule |
| B. | radicle |
| C. | hilum |
| D. | none of above |
| Answer» D. none of above | |