NEET Biology: Organisms and Population — MCQ Test 23

Q6. Which type of organism is most likely to be an r-selected species?

Q7. Which term describes the number of individuals per unit area in a population?

Q8. Which of the following is a density-dependent factor in population regulation?

Q9. Which of the following is an incorrect statement about mutualism?

Q10. Which of the following factors is density-dependent?

NEET BiologyOrganisms and Population

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Which of the following best explains why populations fluctuate over time?

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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 Following, Explains, Populations, Fluctuate, Statement, and Invasive.

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 of the following best explains why populations fluctuate over time?

  • A. Changes in birth and death rates
  • B. Stable environmental conditions
  • C. Consistent availability of resources
  • D. Absence of competition

Q2. Which of the following is a correct statement about invasive species?

  • A. They always increase biodiversity.
  • B. They can disrupt ecosystem stability by outcompeting native species.
  • C. They always require human introduction.
  • D. They have no effect on native species.

Q3. Which of the following is NOT a factor affecting population growth?

  • A. Natality
  • B. Mortality
  • C. Mutation
  • D. Immigration

Q4. Which of the following is an example of amensalism?

  • A. Cattle egret benefiting from grazing cattle
  • B. Penicillium releasing antibiotics that kill bacteria
  • C. Tiger preying on a deer
  • D. Orchid growing on a tree

Q5. Which of the following is a correct statement about trophic cascades?

  • A. They only occur in aquatic ecosystems.
  • B. They describe how changes in predator populations affect lower trophic levels.
  • C. They have no impact on ecosystem balance.
  • D. They only involve herbivores and primary producers.

+ 5 more questions in the actual test

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