3rd Q CT3 Review

What is the study of how organisms interact with the living and nonliving things that surround them called?

• Biology

• Ecology

• Geology

• Astronomy

Answer explanation

The study of how organisms interact with their environment, including both living (biotic) and nonliving (abiotic) components, is called ecology. This field focuses on relationships and ecosystems.

What are abiotic factors in the environment?

• Plants, animals, decomposers

• Air, water, soil

• Bacteria, fungi, insects

• Trees, flowers, grass

Answer explanation

Abiotic factors are non-living components of the environment. Air, water, and soil are essential abiotic factors that influence ecosystems, while plants, animals, and decomposers are biotic factors.

Which of the following is an example of a biotic factor?

• Air

• Water

• Soil

• Plants

Answer explanation

Plants are biotic factors as they are living organisms that interact with other living things in an ecosystem. In contrast, air, water, and soil are abiotic factors, which are non-living components.

What term is used to describe non-living factors in the environment?

• Biotic

• Abiotic

• Organic

• Synthetic

Answer explanation

The term 'abiotic' refers to non-living factors in the environment, such as sunlight, water, and minerals. In contrast, 'biotic' refers to living organisms. Therefore, 'abiotic' is the correct choice.

Which of the following is NOT a biotic factor?

• Animals

• Decomposers

• Soil

• Plants

Answer explanation

Soil is an abiotic factor, as it is non-living and provides nutrients for biotic factors like animals, decomposers, and plants. Therefore, the correct answer is Soil.

What is a species?

• A group of organisms that only reproduces within itself.

• Members of the same species in the same area.

• All of the species that occupy an area.

• A single organism in an ecosystem.

Answer explanation

A species is defined as a group of organisms that can interbreed and produce fertile offspring, meaning they reproduce within themselves. This distinguishes them from other groups, making the first choice the correct answer.

What defines a population?

• A group of organisms that only reproduces within itself.

• Members of the same species in the same area.

• All of the species that occupy an area.

• A single organism in an ecosystem.

Answer explanation

A population is defined as members of the same species living in the same area. This choice accurately describes the concept of a population, distinguishing it from other options that refer to different ecological levels.

What is a community in ecological terms?

• A group of organisms that only reproduces within itself.

• Members of the same species in the same area.

• All of the species that occupy an area.

• A single organism in an ecosystem.

Answer explanation

In ecological terms, a community refers to all the species that occupy a specific area, interacting with one another. This distinguishes it from groups of the same species or individual organisms.

What is an ecosystem?

• A region characterized by climate, dominant plants, and animals

• All of the living and nonliving things that occupy an area

• Encompasses all living things on Earth

• A single species living in an area

Answer explanation

An ecosystem includes all living (plants, animals) and nonliving (water, soil) components in a specific area, making the correct choice "All of the living and nonliving things that occupy an area".

What defines a biome?

• All of the living and nonliving things that occupy an area

• Encompasses all living things on Earth

• Regions characterized by climate, dominant plants, and animals

• A single species living in an area

Answer explanation

A biome is defined by regions characterized by climate, dominant plants, and animals. This choice accurately captures the essence of a biome, distinguishing it from broader concepts like ecosystems or individual species.