Flashcards on Organisms and Populations

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Define an organism.

An individual living thing that can carry out life processes, such as eating, breathing, and reproducing.

What is a population?

A group of organisms of the same species living in the same area at the same time.

Differentiate between biotic and abiotic factors.

Biotic factors are living or once-living things in an ecosystem, while abiotic factors are non-living physical and chemical factors.

What is a habitat?

The place where an organism lives, including the physical and biological factors that influence it.

Explain the concept of carrying capacity.

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

What is an ecosystem?

A community of interacting organisms and their physical environment.

Define biodiversity.

The variety of different species, genetic variability, and ecosystems present in a given area.

What is natural selection?

The process where organisms that are better adapted to their environment tend to survive, reproduce, and pass on their traits to the next generation.

Explain the difference between primary and secondary succession.

Primary succession occurs in an area that has never been occupied by a community, while secondary succession happens in an area where a community has already existed but has been disrupted.

What is the role of a producer in an ecosystem?

Producers, such as plants, use energy from the sun to convert carbon dioxide and water into glucose through photosynthesis.

Define a consumer.

A consumer is an organism that obtains energy by feeding on other organisms or their remains.

Explain the difference between a primary consumer and a secondary consumer.

A primary consumer directly feeds on the producers (plants), while a secondary consumer feeds on primary consumers.

What is a decomposer?

A decomposer is an organism, usually a bacterium or fungus, that breaks down organic matter into simpler compounds and releases nutrients back into the ecosystem.

Explain the principle of energy transfer in an ecosystem.

Energy flows through an ecosystem in a one-way stream, from producers to various levels of consumers, and eventually to decomposers. It is not recycled within the ecosystem.

What is a food chain?

A food chain is the sequence of who eats whom in a biological community to obtain nutrition and energy flow in an ecosystem.

Explain the concept of a trophic level.

Trophic levels represent the feeding positions in a food chain or energy pyramid, such as producers, primary consumers, secondary consumers, etc.

Define an organism.

An individual living thing that can carry out life processes, such as eating, breathing, and reproducing.

What is a population?

A group of organisms of the same species living in the same area at the same time.

Differentiate between biotic and abiotic factors.

Biotic factors are living or once-living things in an ecosystem, while abiotic factors are non-living physical and chemical factors.

What is a habitat?

The place where an organism lives, including the physical and biological factors that influence it.

Explain the concept of carrying capacity.

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

What is an ecosystem?

A community of interacting organisms and their physical environment.

Define biodiversity.

The variety of different species, genetic variability, and ecosystems present in a given area.

What is natural selection?

The process where organisms that are better adapted to their environment tend to survive, reproduce, and pass on their traits to the next generation.

Explain the difference between primary and secondary succession.

Primary succession occurs in an area that has never been occupied by a community, while secondary succession happens in an area where a community has already existed but has been disrupted.

What is the role of a producer in an ecosystem?

Producers, such as plants, use energy from the sun to convert carbon dioxide and water into glucose through photosynthesis.

Define a consumer.

A consumer is an organism that obtains energy by feeding on other organisms or their remains.

Explain the difference between a primary consumer and a secondary consumer.

A primary consumer directly feeds on the producers (plants), while a secondary consumer feeds on primary consumers.

What is a decomposer?

A decomposer is an organism, usually a bacterium or fungus, that breaks down organic matter into simpler compounds and releases nutrients back into the ecosystem.

Explain the principle of energy transfer in an ecosystem.

Energy flows through an ecosystem in a one-way stream, from producers to various levels of consumers, and eventually to decomposers. It is not recycled within the ecosystem.

What is a food chain?

A food chain is the sequence of who eats whom in a biological community to obtain nutrition and energy flow in an ecosystem.

Explain the concept of a trophic level.

Trophic levels represent the feeding positions in a food chain or energy pyramid, such as producers, primary consumers, secondary consumers, etc.

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