Question : Select the false statement concerning the food chain.
Option 1: Inter-relation between different food chains is known as a food web.
Option 2: All the chains formed by nutritional relations are used to understand energy flow.
Option 3: Only producers of the food chain form a trophic level.
Option 4: Every component of the food chain forms a trophic level.
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Correct Answer: Only producers of the food chain form a trophic level.
Solution : The correct option is Only producers of the food chain form a trophic level.
Depending on how many energy transfers separate an organism from the chain's fundamental input, it will occupy a distinct trophic level in a food chain. A more accurate depiction of consumption interactions in ecosystems, food webs are made up of numerous interwoven food chains. The length of food chains is constrained by this inefficiency.
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Question : Select the option that expresses the given sentence in passive voice. Let the experts emphasise the importance of renewable energy.
Option 1: Let the importance of renewable energy be emphasised by the experts.
Option 2: The importance of renewable energy let be emphasised by the experts.
Option 3: Let the importance of renewable energy is emphasised by the experts.
Option 4: The importance of renewable energy will be emphasised by the experts.
Question : The following particles move with the same kinetic energy. Which of them has maximum momentum?
Option 1: Electron
Option 2: Proton
Option 3: Neutron
Option 4: Alpha particle
Question : What is the primary source of energy in an ecosystem?
Option 1: Moonlight
Option 2: Sunlight
Option 3: Oxidation in plants
Option 4: The heat released during respiration
Question : Conversion of heat into electrical energy is achieved by using:
Option 1: ammeter
Option 2: hydrometer
Option 3: voltmeter
Option 4: thermocouple
Question : Which of the following is correctly matched?
Option 1: Electric force - kilowatt minute
Option 2: Electric potential - kilowatt seconds
Option 3: Electric energy - kilowatt-hour
Option 4: Electric power - kilohour
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