NEET Biology: Organisms and Population — Practice Set 13

Q1. Which of the following best describes resource partitioning?

A. Two species completely overlap in resource use
B. One species outcompetes the other, leading to extinction
C. Species use different parts of a resource to reduce competition
D. A predator preying on different species

Q2. Which of the following represents an example of a keystone species?

A. Bamboo in a forest
B. Tiger in a grassland ecosystem
C. Rabbit in a field
D. Pine tree in a coniferous forest

Q3. Which of the following species interactions results in both species being harmed?

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

Q4. Which of the following statements about keystone species is incorrect?

A. Keystone species play a crucial role in ecosystem balance.
B. Removing a keystone species can disrupt an ecosystem.
C. Keystone species are always the most abundant in an ecosystem.
D. Predators can act as keystone species by regulating prey populations.

Q5. Which of the following statements about trophic levels is incorrect?

A. Producers occupy the first trophic level.
B. Primary consumers feed directly on producers.
C. Tertiary consumers obtain energy directly from producers.
D. Decomposers play a role in nutrient cycling.

Q6. Which of the following is a correct statement about trophic levels?

A. Producers occupy the highest trophic level.
B. Primary consumers feed directly on producers.
C. Energy transfer between trophic levels is 100% efficient.
D. Decomposers do not play a role in energy transfer.

Q7. Which of the following best defines the carrying capacity (K) of an environment?

A. The maximum number of species an ecosystem can support
B. The highest population size that an environment can sustain indefinitely
C. The total number of individuals born in a year
D. The total number of species in an ecosystem

Q8. Which of the following is a correct statement about ecosystem resilience?

A. Ecosystem resilience refers to the ability to recover from disturbances.
B. Resilience decreases with higher biodiversity.
C. Resilient ecosystems are always unstable.
D. Human activities have no impact on ecosystem resilience.

Q9. Which of the following best defines the term "age structure" in population ecology?

A. The proportion of males and females in a population
B. The relative number of individuals in different age groups
C. The total number of individuals in a population
D. The rate of population increase over time

Q10. Which of the following is an example of a density-independent factor regulating population size?

A. Predation
B. Food availability
C. Disease
D. Natural disaster

Biology — Organisms and Population

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Which of the following best describes resource partitioning?

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