-Biology_Quarter_1_Practice.Exam

Front

What is the role of predators in an ecosystem?

Back

Predators help control the population of prey species, maintaining a balance in the ecosystem.

Front

What happens to prey populations when predators are removed?

Back

Prey populations can experience unlimited growth without predators to control their numbers.

Front

Define biodiversity.

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the number of species and their interactions.

Front

How can introducing new species affect biodiversity?

Back

Introducing new species can enhance biodiversity by adding to the variety of organisms in an ecosystem.

Front

What is competition in an ecosystem?

Back

Competition occurs when two or more species or individuals vie for the same resources, such as food, water, or space.

Front

Explain the concept of energy transfer in food chains.

Back

Energy transfer in food chains is inefficient; only about 10% of energy is passed from one trophic level to the next.

Front

What is a trophic level?

Back

A trophic level is a position in a food chain or food web, defined by how organisms obtain energy.

Front

What is the significance of keystone species?

Back

Keystone species have a disproportionately large impact on their ecosystem, helping to maintain its structure and balance.

Front

Define carrying capacity.

Back

Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support.

Front

What is the impact of overpopulation on ecosystems?

Back

Overpopulation can lead to resource depletion, habitat destruction, and increased competition among species.