NEET Biology: Organisms and Population — Practice Set 18

Q1. Which of the following statements about population dynamics is incorrect?

A. Birth rate and death rate influence population size.
B. Immigration increases population size.
C. Carrying capacity remains constant under all environmental conditions.
D. Predation can regulate population size.

Q2. What is the significance of predation in an ecosystem?

A. It leads to extinction of prey species
B. It controls prey populations and maintains ecosystem stability
C. It reduces species diversity
D. It prevents energy transfer in the food chain

Q3. Which of the following statements about resource partitioning is incorrect?

A. It helps reduce competition among species.
B. It leads to species using different resources or habitats.
C. It prevents coexistence among competing species.
D. It allows species to exploit available resources more efficiently.

Q4. Which of the following statements about logistic growth is FALSE?

A. It includes a carrying capacity
B. Growth rate is highest when the population is small
C. It shows an S-shaped curve
D. Population grows indefinitely

Q5. Which of the following statements about population dynamics is correct?

A. Birth rate and death rate influence population size.
B. Immigration decreases population size.
C. Carrying capacity remains constant in all environmental conditions.
D. Predation has no effect on population size.

Q6. Which factor is most likely to regulate a population size in a density-dependent manner?

A. Hurricane
B. Disease
C. Earthquake
D. Volcanic eruption

Q7. What happens when a population exceeds its carrying capacity?

A. Population growth accelerates
B. Resources become limited, leading to competition
C. Birth rates increase significantly
D. All individuals survive indefinitely

Q8. Which of the following population attributes determines the potential for future population growth?

A. Age distribution
B. Mortality rate
C. Carrying capacity
D. Species richness

Q9. Which of the following best describes the term "competitive exclusion principle"?

A. Two species can coexist indefinitely in the same niche
B. Two closely related species cannot coexist in the same niche indefinitely
C. Competition always results in extinction
D. Herbivory is a type of competition

Q10. Which of the following statements about the phosphorus cycle is correct?

A. The phosphorus cycle includes an atmospheric component.
B. Phosphorus is primarily cycled through rock weathering and soil processes.
C. Phosphorus does not play a role in biological systems.
D. The phosphorus cycle does not involve any geological processes.

Biology — Organisms and Population

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Which of the following statements about population dynamics is incorrect?

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