MCQOPTIONS
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MCQOPTIONS
This section includes 639 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Which of the following ecosystem shows varieties in his vegetation? |
| A. | Aquatic ecosystem |
| B. | Desert ecosystem |
| C. | Grassland ecosystem |
| D. | Forest ecosystem |
| Answer» D. Forest ecosystem | |
| 102. |
The large scale, global ecosystem is known as |
| A. | Biomes |
| B. | Biomass |
| C. | Biosphere |
| D. | Hydrosphere |
| Answer» B. Biomass | |
| 103. |
According to this EEZ zone, countries are responsible for marine resources in their own |
| A. | Territorial Water |
| B. | Land water |
| C. | Coastal Areas |
| D. | Surface areas |
| Answer» B. Land water | |
| 104. |
What is temperature of thermosphere? |
| A. | 1000 C |
| B. | 4000 C |
| C. | 3000 C |
| D. | 2000 C |
| Answer» E. | |
| 105. |
What is the source of ground ozone? |
| A. | factories |
| B. | Car Exhaust |
| C. | Industries |
| D. | Industrial Pollution |
| Answer» C. Industries | |
| 106. |
The crustaceans eat |
| A. | Mulluscs |
| B. | Crustaceans |
| C. | Small Fishes |
| D. | Large Fishes |
| Answer» D. Large Fishes | |
| 107. |
Breakdown of organic matter is known as: |
| A. | Decomposition |
| B. | Condensation |
| C. | Precipitation |
| D. | Infiltration |
| Answer» B. Condensation | |
| 108. |
Which of the following consist of patches on hill slopes? |
| A. | The shola grassland |
| B. | Desert |
| C. | Himalayan region |
| D. | Deccan pasture land |
| Answer» B. Desert | |
| 109. |
An habitat is an organism natural |
| A. | Home |
| B. | Planet |
| C. | Space |
| D. | All of these |
| Answer» B. Planet | |
| 110. |
Which heterotrophs feed on organic matters, dead plants and animals? |
| A. | Omnivores |
| B. | Saprotrophs |
| C. | Herbivores |
| D. | Producer |
| Answer» C. Herbivores | |
| 111. |
Where can we find babul tree? |
| A. | In deserts ecosystems |
| B. | In river deltas |
| C. | In grassland ecosystems |
| D. | In semi-arid ecosystems |
| Answer» E. | |
| 112. |
Why Iceland refused to join European Union? |
| A. | For Fishing |
| B. | to have a full control on the Marine Resources |
| C. | No interference of EU |
| D. | Security |
| Answer» C. No interference of EU | |
| 113. |
In which biome plants and animals are drought tolerant? |
| A. | Tropical Savannah |
| B. | Tropical Rain Forests |
| C. | Taiga |
| D. | Boreal Forest |
| Answer» B. Tropical Rain Forests | |
| 114. |
In which layer of atmosphere temperature remains constant? |
| A. | Mesosphere |
| B. | Thermosphere |
| C. | Stratosphere |
| D. | Troposphere |
| Answer» D. Troposphere | |
| 115. |
A type of food chain, starts from green plants, get around herbivorous and end up with carnivorous, known as |
| A. | Grazing food chain |
| B. | Detritus food chain |
| C. | Tropical level |
| D. | Food web |
| Answer» B. Detritus food chain | |
| 116. |
Which is known as boreal forest ? |
| A. | Taiga forests |
| B. | Thick forests |
| C. | Tropical rain forests |
| D. | Monsoon Forests |
| Answer» B. Thick forests | |
| 117. |
Which ecosystems follow grazing food chain? |
| A. | Estuaries |
| B. | Grasslands, forests and ponds |
| C. | Mangroves |
| D. | All of them |
| Answer» C. Mangroves | |
| 118. |
What is the average rain fall in deserts? |
| A. | 250 mm per year |
| B. | more than 250mm per year |
| C. | less than 250mm per year |
| D. | 500mm per year |
| Answer» D. 500mm per year | |
| 119. |
How does solar radiations travel through space ? |
| A. | Electromagnetic Waves |
| B. | Light Waves |
| C. | Air Waves |
| D. | All of above |
| Answer» B. Light Waves | |
| 120. |
Initial causes of ecological succession, responsible for destruction of existed |
| A. | Animal species |
| B. | Ecosystem |
| C. | Populations |
| D. | Plant species |
| Answer» D. Plant species | |
| 121. |
All the ecosytem are sustained by the |
| A. | Food Chain |
| B. | Food Web |
| C. | Nutrients |
| D. | Flow of energy |
| Answer» E. | |
| 122. |
What is considered as lungs of nature? |
| A. | Rock |
| B. | Sun |
| C. | Water |
| D. | Trees |
| Answer» E. | |
| 123. |
Why are the trophic levels is in the shape of pyramid? |
| A. | Due to loss of energy between the trophic level |
| B. | Due to good looking |
| C. | Due to increase of energy between the trophic level |
| D. | Due to stable energy between the trophic level |
| Answer» B. Due to good looking | |
| 124. |
Marine ecosystem is divided into |
| A. | 9 Tropic Levels |
| B. | 5 Tropic Levels |
| C. | 2 Trphic Levels |
| D. | 4 Tropic Levels |
| Answer» E. | |
| 125. |
The biomass of a forest is defined as the mass of living plants. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 126. |
Why lions are apex predators in grassland ecosystem? |
| A. | Because lion do not eat other organisms |
| B. | Because no other animal hunt lion for food |
| C. | Because lion is the king of the jungle |
| D. | Because lion is a herbivore animal |
| Answer» C. Because lion is the king of the jungle | |
| 127. |
Air, water and sunlight includes in an |
| A. | Population |
| B. | Environment |
| C. | Community |
| D. | Hydrosphere |
| Answer» C. Community | |
| 128. |
What is the significance of the shape of the pyramid of energy? |
| A. | It shows decrease in energy |
| B. | It shows increase in energy |
| C. | It shows the direction of energy flow |
| D. | It shows the trophic levels |
| Answer» B. It shows increase in energy | |
| 129. |
What is called for a pattern of vegetation change in which a small number of species tend to replace each other over time in the absence of large scale disturbance? |
| A. | Primary succession |
| B. | Secondary succession |
| C. | Tertiary succession |
| D. | Cyclic succession |
| Answer» E. | |
| 130. |
Which of the following factor help to conserve water quality? |
| A. | Sunlight |
| B. | Forest |
| C. | Rock |
| D. | Sand |
| Answer» C. Rock | |
| 131. |
On which factor forest type is mainly dependent? |
| A. | Abiotic |
| B. | Size of the forest |
| C. | Shape of trees |
| D. | Products from the trees |
| Answer» B. Size of the forest | |
| 132. |
Temperature, Rainfall and wind include in which factors of abiotic factor? |
| A. | Soil |
| B. | Climate |
| C. | Biotic and Abiotic components |
| D. | Local factors |
| Answer» C. Biotic and Abiotic components | |
| 133. |
Forest plays an important role in ecosystem. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 134. |
Water contains impurities during |
| A. | Evapo-transpiration |
| B. | Condensation |
| C. | Transpiration |
| D. | Filtration |
| Answer» C. Transpiration | |
| 135. |
What is common in all ecosystem? |
| A. | Nourishment Network |
| B. | Size of species |
| C. | variation of borders |
| D. | Shape of organism |
| Answer» B. Size of species | |
| 136. |
Plants which lives for many years are known as |
| A. | Perennial plants |
| B. | Climax Community |
| C. | Autotrophic succession |
| D. | Heterotrophic succession |
| Answer» B. Climax Community | |
| 137. |
Which process involved in waste water convertion into drinkable water ? |
| A. | Precipitation |
| B. | Condensation |
| C. | Filtration |
| D. | Nutrient cycle |
| Answer» D. Nutrient cycle | |
| 138. |
Human activities such as fires affect grassland adversely. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 139. |
In grassland area how much amount of rainfall is required? |
| A. | Low rainfall |
| B. | High rainfall |
| C. | Moderate rainfall |
| D. | They don’t require any rainfall |
| Answer» B. High rainfall | |
| 140. |
What is melting point of water? |
| A. | 6 C |
| B. | 0 C |
| C. | 9 C |
| D. | 10 C |
| Answer» C. 9 C | |
| 141. |
In which of the following we can have more than one source of organisms for energy? |
| A. | Food chain |
| B. | Food web |
| C. | Food circle |
| D. | Food rotation |
| Answer» C. Food circle | |
| 142. |
What are well ordered and highly integrated? |
| A. | Communities |
| B. | Population |
| C. | Environment |
| D. | Biosphere |
| Answer» B. Population | |
| 143. |
Carbohydrates, proteins, humus and lipids included in |
| A. | Inorganic substances |
| B. | Organic substances |
| C. | Biotic Factors |
| D. | Abiotic Factors |
| Answer» C. Biotic Factors | |
| 144. |
How might ecosystem services save our life? |
| A. | By providing energy |
| B. | By expanding our wealth |
| C. | By killing organisms |
| D. | By causing damages to ecosystem |
| Answer» B. By expanding our wealth | |
| 145. |
Some landscape unable to reach a stable climax, which is known as |
| A. | Climax Community |
| B. | Dis-Climax Community |
| C. | Equilibrium Community |
| D. | Ecological Succession |
| Answer» C. Equilibrium Community | |
| 146. |
What human activities effects the ecosystem? |
| A. | Air pollution |
| B. | Clearance, Farming, logging and pollution |
| C. | Walking in the undisturbed ecosystem |
| D. | Less water availability |
| Answer» C. Walking in the undisturbed ecosystem | |
| 147. |
Which three material are recycled in the nutrient cycle? |
| A. | Water, Oxygene and Soil |
| B. | Carbon, Hydrogen and Oxygen |
| C. | Carbohyrades, Enzymes. Nutrients |
| D. | Food, Water and soil |
| Answer» C. Carbohyrades, Enzymes. Nutrients | |
| 148. |
What is air pressure at sea level? |
| A. | 4033.6g/sq.cm |
| B. | 3033.6g/sq.cm |
| C. | 2033.6g/sq.cm |
| D. | 1033.6g/sq.cm |
| Answer» E. | |
| 149. |
What is an approximate percentage of dissolved solid in seawater? |
| A. | 0.045 |
| B. | 0.035 |
| C. | 0.045 |
| D. | 0.025 |
| Answer» C. 0.045 | |
| 150. |
Which is the largest ecosystem on Earth? |
| A. | Desert |
| B. | Forest |
| C. | Grassland |
| D. | Oceans |
| Answer» E. | |