NEET Biology: Organisms and Population — Practice Set 11

Q1. Which of the following correctly describes a J-shaped growth curve?

A. Population grows rapidly and stabilizes
B. Population grows exponentially and crashes when resources are depleted
C. Population remains constant over time
D. Population initially declines and then increases

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

A. Biodiversity includes species, genetic, and ecosystem diversity.
B. All ecosystems have the same level of biodiversity.
C. Biodiversity loss has no effect on ecosystem stability.
D. Biodiversity decreases ecosystem resilience.

Q3. Which factor is NOT considered in determining a species' ecological niche?

A. Its role in the ecosystem
B. Its interaction with other species
C. Its geographical location
D. Its tolerance to environmental conditions

Q4. Which of the following statements about ecological succession is correct?

A. Primary succession begins on previously inhabited land.
B. Secondary succession occurs faster than primary succession.
C. Pioneer species are the last to colonize during succession.
D. Succession does not lead to the formation of stable communities.

Q5. Which of the following is an incorrect statement about ecosystem stability?

A. Higher biodiversity increases ecosystem resilience.
B. Stable ecosystems can recover from disturbances.
C. Ecosystem stability is unaffected by species interactions.
D. Ecosystem stability depends on biotic and abiotic factors.

Q6. What is the primary advantage of resource partitioning among competing species?

A. It increases competition
B. It allows coexistence by reducing direct competition
C. It eliminates weaker species
D. It leads to extinction of all competing species

Q7. Which of the following statements about ecological interactions is correct?

A. Parasitism benefits both species involved.
B. Competition negatively affects both interacting species.
C. Mutualism always harms one species.
D. Predation does not affect prey populations.

Q8. What happens when a population exceeds its carrying capacity?

A. Population growth increases exponentially
B. Resources become limited, leading to population decline
C. All individuals survive indefinitely
D. Birth rates increase

Q9. What is the primary reason why invasive species can outcompete native species?

A. They reproduce more slowly
B. They have fewer natural predators
C. They require specialized habitats
D. They depend on mutualistic interactions

Q10. Which of the following is an adaptation to herbivory in plants?

A. Production of secondary metabolites
B. Increased seed dispersal
C. More efficient photosynthesis
D. Longer gestation periods

Biology — Organisms and Population

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Which of the following correctly describes a J-shaped growth curve?

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