Q1. Which of the following correctly represents an age pyramid of a stable population?A. Broad base, narrow topB. Bell-shapedC. Inverted pyramidD. Narrow base, broad middle
Q2. Which of the following statements about species interactions is incorrect?A. Mutualism benefits both species involved.B. Commensalism harms one species and benefits the other.C. Parasitism benefits one species at the expense of the host.D. Competition occurs when two species vie for the same limited resource.
Q3. Which of the following statements about population growth is correct?A. Exponential growth occurs when resources are limited.B. Logistic growth includes a carrying capacity.C. Population growth is unaffected by resource availability.D. Birth and death rates have no effect on population size.
Q4. Which factor does NOT contribute to an increase in population density?A. NatalityB. ImmigrationC. EmigrationD. Both 1 and 2
Q5. Which of the following statements about ecological succession is correct?A. Primary succession begins on existing soil.B. Secondary succession occurs after a disturbance in an area with existing life.C. Pioneer species appear at the end of succession.D. Climax communities are unstable and constantly changing.
Q6. What is the term for the number of individuals per unit area or volume in a habitat?A. Population densityB. Carrying capacityC. BiomassD. Age pyramid
Q7. Which of the following is an example of mutualism?A. Tiger hunting deerB. Lichen (algae and fungi)C. Cattle egret and grazing cattleD. Ticks on a dog
Q8. Which of the following statements about density-dependent factors is incorrect?A. Disease spreads more rapidly in dense populations.B. Food scarcity affects population size in a density-independent manner.C. Predation pressure increases with higher population density.D. Competition for resources is a density-dependent factor.
Q9. What type of growth curve is seen when resources are unlimited?A. Logistic growth curveB. S-shaped growth curveC. J-shaped growth curveD. Linear growth curve
Q10. Which of the following is NOT a level of ecological organization?A. OrganismB. PopulationC. EcosystemD. Cell