NEET Biology: Ecosystem — MCQ Test 25

Q6. Which of the following statements about ecological pyramids is incorrect?

Q7. Which of the following statements about net primary productivity (NPP) is incorrect?

Q8. What term describes the vertical distribution of different species in an ecosystem?

Q9. Why is the pyramid of energy always upright?

Q10. Which of the following is the best example of an autotrophic organism in an aquatic ecosystem?

NEET Biology — Ecosystem

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Which process in decomposition results in the accumulation of a dark-colored organic substance in soil?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Biology preparation, focusing specifically on the chapter Ecosystem. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Decomposition, Accumulation, Substance, Following, Ecosystems, and Productivity.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. Which process in decomposition results in the accumulation of a dark-colored organic substance in soil?

  • A. Leaching
  • B. Mineralization
  • C. Humification
  • D. Fragmentation

Q2. Which of the following ecosystems has the highest net primary productivity?

  • A. Desert
  • B. Open ocean
  • C. Tropical rainforest
  • D. Tundra

Q3. Which of the following factors is responsible for the high productivity of estuarine ecosystems?

  • A. Low nutrient availability
  • B. High salinity levels
  • C. Abundant nutrients and light
  • D. Limited producer diversity

Q4. Which of the following is a correct statement about the nitrogen cycle?

  • A. Plants can directly absorb nitrogen gas from the atmosphere
  • B. Denitrification converts nitrates into nitrogen gas
  • C. Nitrogen fixation releases nitrogen gas into the air
  • D. Animals can fix atmospheric nitrogen

Q5. Which of the following is the primary reason for the low productivity of oceans?

  • A. Lack of sunlight
  • B. Low nutrient availability
  • C. Excessive primary consumers
  • D. Limited space for producers

+ 5 more questions in the actual test

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