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  4. Organisms And Population Chapter-Wise Test 2

Organisms And Population Chapter-Wise Test 2

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following correctly defines the term "population ecology"?

Study of individual organisms and their physiology
Study of interactions between populations and their environment
Study of genetic changes within a population
Study of abiotic factors in an ecosystem
2

Population ecology focuses on how populations interact with their environment, including factors affecting population size and distribution.

In logistic growth, what happens when the population reaches carrying capacity?

Growth rate continues to increase
Growth rate slows and stabilizes
Population crashes immediately
Resources become unlimited
2

In logistic growth, population growth slows as it nears carrying capacity due to resource limitations.

What type of survivorship curve do organisms with high parental care typically exhibit?

Type I
Type II
Type III
Exponential
1

Type I survivorship curves are seen in species with high parental care, where most individuals survive to old age, such as humans.

Which of the following correctly describes predation?

Both species benefit
One species benefits, the other is harmed
One species benefits, the other is unaffected
Both species are harmed
2

In predation, the predator benefits while the prey is harmed or killed.

Which of the following is NOT an example of an abiotic factor affecting population size?

Temperature
Predation
Water availability
Soil composition
2

Predation is a biotic factor as it involves interactions between living organisms, while temperature, water, and soil are abiotic factors.

Which of the following statements about resource partitioning is correct?

It prevents competition by allowing species to use different resources.
It increases direct competition between species.
It causes two species to occupy the exact same niche.
It reduces species diversity in an ecosystem.
1

Resource partitioning allows species to coexist by utilizing different aspects of a shared resource, reducing competition.

Which of the following factors can reduce competition among species in an ecosystem?

Habitat destruction
Resource partitioning
Increased population density
Decreased biodiversity
2

Resource partitioning allows species to utilize different parts of a resource, reducing direct competition.

Which of the following describes ecological succession?

The development of a single species over time
The gradual replacement of one biological community by another
The random movement of species between habitats
The seasonal migration of animals
2

Ecological succession is the gradual process of change in species composition within an ecosystem over time.

Which term describes the movement of individuals out of a population?

Immigration
Emigration
Natality
Carrying capacity
2

Emigration is the movement of individuals out of a population, reducing its size.

Which term describes the maximum number of individuals an environment can support sustainably?

Biotic potential
Carrying capacity
Exponential growth
Logistic growth
2

Carrying capacity (K) is the maximum population size that an environment can support without resource depletion.

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