Which of the following represents a biotic potential in population ecology?
AThe maximum rate at which a population can increase under ideal conditions
BThe resistance offered by the environment to population growth
CThe carrying capacity of the environment
DThe death rate of a population
Correct Answer:
A. The maximum rate at which a population can increase under ideal conditions
EXPLANATION
Biotic potential refers to the inherent capacity of an organism to reproduce and increase in numbers when environmental conditions are optimal and resources are unlimited.
The energy transfer efficiency from one trophic level to the next in an ecosystem is approximately:
A50%
B10%
C25%
D75%
Correct Answer:
B. 10%
EXPLANATION
The Lindeman 10% law states that only approximately 10% of energy is transferred from one trophic level to the next, with the remaining 90% lost as heat, respiration, and incomplete consumption.
Ecological succession in freshwater ecosystems follows a predictable pattern starting with pioneer algae, progressing to submerged aquatic vegetation, then emergent plants, and finally leading to terrestrial vegetation as the habitat transitions.
In a predator-prey relationship within Indian grasslands, population cycles demonstrate Lotka-Volterra equations. If prey population peaks, the predator population would peak approximately:
AAt the same time as prey
BBefore the prey population peaks
CAfter the prey population peaks
DRandomly without relationship to prey
Correct Answer:
C. After the prey population peaks
EXPLANATION
Lotka-Volterra cycles show predator population lags behind prey by approximately 90 degrees, peaking after prey abundance increases.