State PCS PYQPrelims 2025

UPPCS · प्रश्न 120

With reference to 'Ecosystem', which of the following statements is/are correct? 1. Green plants in terrestrial ecosystems capture about 1% of energy of sunlight that falls on their leaves. 2. Around 10% of organic matter reaches to the next higher level of consumers. Select the correct answer using the code given below.

  1. Neither 1 nor 2
  2. Only 1
  3. Only 2
  4. Both 1 and 2
उत्तर देखें और व्याख्या

उत्तर: (D) Both 1 and 2

व्याख्या

Plants fix only about 1% (1-5%) of incident sunlight, and Lindeman's 10% law says roughly 10% of energy passes to the next trophic level.