Which of the following is the ultimate source of energy for all living organisms? 

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SSC MTS (2022) Official Paper (Held On: 11 May, 2023 Shift 1)
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  1. Soil
  2. Sun
  3. Water
  4. Air

Answer (Detailed Solution Below)

Option 2 : Sun
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Detailed Solution

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The correct answer is Sun.Key Points

  • The ultimate source of energy for all living organisms is the sun.
  • The sun provides energy to plants through the process of photosynthesis.
  • Animals then consume plants (or other animals that have consumed plants) to obtain energy.
  • This energy is then used for various processes such as growth, reproduction, and movement.
  • Without the sun, life on Earth would not be possible.

Additional Information

  • Soil: While soil does provide nutrients and water to plants, it is not the ultimate source of energy for living organisms.
  • Water: Water is essential for life, but it is not a direct source of energy.
  • Air: While oxygen is required for respiration, it is not the ultimate source of energy.
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Last updated on May 28, 2025

-> SSC MTS 2025 Notification will be released by the Staff Selection Commission (SSC) on the official website on 26th June, 2025.

-> The online application process will also begin once the official notification is out. The last date to apply online will be 25th July 2025 as per the SSC Exam Calendar 2025-26.

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-> Candidates with basic eligibility criteria of the 10th class were eligible to appear for the examination. 

-> Candidates must attempt the SSC MTS Mock tests and SSC MTS Previous year papers for preparation.

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