NEET Biology: Organisms and Population — MCQ Test 26

Q6. Which of the following correctly defines immigration in population ecology?

Q7. Which of the following best describes the role of a keystone species in an ecosystem?

Q8. What does the carrying capacity (K) of an environment represent?

Q9. Which of the following is an example of a keystone species?

Q10. Which population interaction involves one species benefiting while the other is harmed?

NEET Biology — Organisms and Population

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Which factor is a major cause of population fluctuations in nature?

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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 Organisms and Population. 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 Population, Fluctuations, Following, Interactions, Involves, and Benefiting.

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 factor is a major cause of population fluctuations in nature?

  • A. Genetic mutations
  • B. Climate variability
  • C. Individual adaptation
  • D. Internal organ development

Q2. Which of the following species interactions involves one species benefiting while the other is unaffected?

  • A. Mutualism
  • B. Commensalism
  • C. Parasitism
  • D. Competition

Q3. Which of the following factors is NOT density-dependent?

  • A. Competition for food
  • B. Spread of disease
  • C. Natural disasters
  • D. Predation

Q4. Which of the following is a correct statement about ecological pyramids?

  • A. Pyramids of biomass are always upright.
  • B. Pyramids of energy can sometimes be inverted.
  • C. Pyramids of numbers can be inverted in some ecosystems.
  • D. Energy is not lost as heat at any trophic level.

Q5. Which of the following species interactions is similar to predation?

  • A. Commensalism
  • B. Parasitism
  • C. Mutualism
  • D. Amensalism

+ 5 more questions in the actual test

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