Q1. Which factor contributes to a decrease in population size?A. High natalityB. High immigrationC. Increased emigrationD. Stable birth rate
Q2. Which of the following is a characteristic of an expanding population?A. Broad reproductive age groupB. Narrow base in age pyramidC. More post-reproductive individualsD. Declining birth rate
Q3. Which of the following is an incorrect statement about carrying capacity?A. Carrying capacity is the maximum population an environment can support.B. It remains constant regardless of environmental conditions.C. It is influenced by resource availability and competition.D. Populations may temporarily exceed carrying capacity before declining.
Q4. Which of the following is NOT a characteristic of an r-selected species?A. High reproductive rateB. Short lifespanC. Large body sizeD. Minimal parental care
Q5. What does a higher intrinsic rate of natural increase (r) indicate?A. Slower population growthB. Lower birth rateC. Higher potential for population growthD. Longer lifespan
Q6. Which term describes an organism’s functional role in an ecosystem?A. HabitatB. NicheC. CommunityD. Biome
Q7. Which of the following is a correct statement about secondary succession?A. It begins in areas where no life previously existed.B. It is slower than primary succession.C. It occurs in areas where an ecosystem was disturbed but soil remains.D. It does not involve pioneer species.
Q8. Which of the following statements about the carbon cycle is incorrect?A. Photosynthesis removes carbon dioxide from the atmosphere.B. Respiration releases carbon dioxide back into the atmosphere.C. The burning of fossil fuels has no effect on atmospheric carbon dioxide levels.D. Oceans act as carbon sinks by absorbing atmospheric CO₂.
Q9. Which type of age pyramid indicates a declining population?A. Triangular age pyramidB. Bell-shaped age pyramidC. Inverted age pyramidD. Pyramid with a broad base
Q10. Which of the following statements about the nitrogen cycle is correct?A. Nitrogen fixation converts atmospheric nitrogen into a usable form.B. Denitrification increases the availability of nitrogen to plants.C. Nitrification directly converts nitrogen gas into ammonia.D. Plants absorb nitrogen directly from the atmosphere.