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Ravi has purchased an aquarium and was surprised to know that regular cleaning of aquariums is essential. Why does it have to be regularly cleaned?
Dead fish and plants may spoil the electric supply of the aquarium.
Dead fish and plants are decomposed by microorganisms and smell bad.
Dead fish and plants should be disposed of in the soil, not in water.
Dead fish and plants may spoil the aeration system of the aquarium.
Dead fish and plants should be disposed of in the soil, not in water.
Regular cleaning of an aquarium is necessary to prevent the accumulation of organic waste such as dead fish and plants. If left in water, these materials decompose due to microbial activity, leading to foul odors, bacterial blooms, and the release of toxic substances like ammonia and nitrates that can kill surviving fish.
Regular cleaning of an aquarium is necessary to prevent the accumulation of organic waste such as dead fish and plants. If left in water, these materials decompose due to microbial activity, leading to foul odors, bacterial blooms, and the release of toxic substances like ammonia and nitrates that can kill surviving fish.
Aquatic Ecosystem Management: Maintenance of a closed aquarium ecosystem is a fundamental principle of Limnology, which studies inland aquatic ecosystems, and is a common topic in General Science and Environment ecology papers.
Decomposition in water leads to rapid water quality deterioration.
Ammonia spikes occur when organic matter decays in closed systems.
Soil disposal allows for natural nutrient decomposition (composting) without affecting aquatic chemistry.
Option A and D are incorrect because while debris can physically obstruct intake filters, the primary biological threat is the contamination of water quality.
Option B is true regarding the smell, but the best practice for management as requested by the exam context is the specific removal and disposal method.
Nitrogen cycling is the critical biological process in aquariums; microbial breakdown of waste produces ammonia, which is toxic to fish.
C is correct тАФ Dead fish and plants should be disposed of in the soil, not in water.
This topic connects to 'Water Pollution' and 'Waste Management' chapters in Environment GK. Always prioritize biological impacts (toxic build-up) over minor mechanical issues in such environmental science MCQs.
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