1. Creating a self-sustainable artificial aquatic ecosystem involves careful design and consideration of various ecological factors. Such systems are often called closed aquatic ecosystems or aquaponics systems. Here's a general guide on how to create a self-sustainable artificial aquatic ecosystem: •Read more

    Creating a self-sustainable artificial aquatic ecosystem involves careful design and consideration of various ecological factors. Such systems are often called closed aquatic ecosystems or aquaponics systems. Here’s a general guide on how to create a self-sustainable artificial aquatic ecosystem:

    • Select a Suitable Container: Choose a container or tank large enough to support a variety of aquatic life. The size will depend on the scale of your project.
    • Water Circulation or pump: Install a water circulation system to ensure adequate oxygenation and nutrient distribution. A pump and filter system can help maintain water quality.
    • Aquatic Plants for oxygen: Introduce aquatic plants, such as water lettuce, water hyacinth, or other submerged plants. These plants will contribute to oxygen production and nutrient cycling.
    • Fish or Aquatic Animals: Introduce fish or other aquatic animals. Fish waste will serve as a nutrient source for the plants, creating a natural symbiotic relationship. Common choices include tilapia, goldfish, or koi.
    • Feeding: Feed the fish in moderation, and let the fish waste serve as a nutrient source for the plants. This creates a closed nutrient cycle.
    • Lighting: Provide appropriate lighting for both plants and, if needed, for the growth of algae. Natural sunlight or artificial lighting can be used, depending on the setup.
    • Regular Pruning and Harvesting: Prune the plants and harvest any edible parts regularly. This helps maintain the balance in the ecosystem and prevents overgrowth.
    • Monitoring: Regularly monitor the ecosystem’s health and make adjustments as needed. This may include adding or removing organisms, adjusting nutrient levels, or addressing any issues with water quality.
    Remember that creating a self-sustainable aquatic ecosystem requires careful planning and ongoing management. It’s essential to understand the specific requirements of the organisms involved and to make adjustments as the ecosystem evolves.

    Hope, It will help you….👍

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  2. (i) A food chain showing Ist tropic level, IInd tropic level, IIIrd tropic level and IVth tropic level. (ii) A flow chart or a diagrammatic representation showing all the four tropic levels would also be accepted According to the 10% law, the amount of energy available will not be sufficient for theRead more

    (i) A food chain showing Ist tropic level, IInd tropic level, IIIrd tropic level and IVth tropic level.
    (ii) A flow chart or a diagrammatic representation showing all the four tropic levels would also be accepted According to the 10% law, the amount of energy available will not be sufficient for the survival of the organism in the 5th trophic level.

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  3. Mg - 12 = 2, 8, 2 Cl - 17 = 2, 8, 7 Solution of Magnesium Chloride conduct electricity because an ionic compound dissociates into ions when dissolved in water and hence conduct electricity.

    Mg – 12 = 2, 8, 2
    Cl – 17 = 2, 8, 7
    Solution of Magnesium Chloride conduct electricity because an ionic compound dissociates into ions when dissolved in water and hence conduct electricity.

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  4. i) Acetic acid will remain colourless in phenolphthalein ii) Acetic acid will dissolve in distilled water forming a clear solution iii) Universal indicator gives orange colour with acetic acid. iv) Sodium hydrogen carbonate will give brisk effervescence due to the formation of CO2 gas..

    i) Acetic acid will remain colourless in phenolphthalein
    ii) Acetic acid will dissolve in distilled water forming a clear solution
    iii) Universal indicator gives orange colour with acetic acid.
    iv) Sodium hydrogen carbonate will give brisk effervescence due to the formation of CO2 gas..

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  5. 1) Maximum level of bio magnification occurs here because of progressive accumulation. 2) We get very small amount of energy as only 10 % of the previous energy gets transferred at each trophic level.

    1) Maximum level of bio magnification occurs here because of progressive accumulation.
    2) We get very small amount of energy as only 10 % of the previous energy gets transferred at each trophic level.

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