Biology Ecology test

Front

What is a food web?

Back

A food web is a complex diagram that shows how various organisms in an ecosystem are interconnected through feeding relationships, illustrating multiple pathways of energy flow.

Front

How does a food web differ from a food chain?

Back

A food web consists of multiple interconnected food chains, showing how different species interact in an ecosystem, while a food chain is a linear sequence of who eats whom.

Front

What is the primary source of energy for life on Earth?

Back

The primary source of energy for life on Earth comes from producers, such as plants, which convert sunlight into food through photosynthesis.

Front

What process allows an environment to transition into a forest?

Back

The process is called ecological succession, where an area gradually changes and develops into a forest over time.

Front

What happens to carbon and nitrogen in an organism's body after it dies?

Back

After an organism dies, carbon and nitrogen are released back into the environment through decomposition, where they are recycled into the ecosystem.

Front

Define producers in an ecosystem.

Back

Producers are organisms, primarily plants and some bacteria, that create their own food through photosynthesis, forming the base of the food web.

Front

What role do consumers play in an ecosystem?

Back

Consumers are organisms that obtain energy by eating other organisms, playing a crucial role in transferring energy through the food web.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Front

Explain the term 'decomposer'.

Back

Decomposers are organisms, such as bacteria and fungi, that break down dead organic material, recycling nutrients back into the ecosystem.

Front

What is ecological succession?

Back

Ecological succession is the gradual process by which ecosystems change and develop over time, often following a disturbance.