Biology Fall Final Review 2024

Front

Why are bees considered a keystone species?

Back

Bees are considered a keystone species because they pollinate flowers that produce fruit, which supports the ecosystem.

Front

What would happen if producers were removed from an ecosystem?

Back

The immediate decrease in the amount of energy flowing through the system would occur if producers were removed, as they are the primary source of energy.

Front

What does a food web represent?

Back

A food web represents all connections of energy flow throughout all organisms in a habitat.

Front

What is the original source of almost all energy in most ecosystems?

Back

The original source of almost all energy in most ecosystems is sunlight.

Front

In which case would a cell most likely shrink?

Back

A cell would most likely shrink when placed in a solution containing a high salt concentration.

Front

Define a keystone species.

Back

A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance.

Front

What role do producers play in an ecosystem?

Back

Producers convert sunlight into energy through photosynthesis, forming the base of the food chain.

Front

Explain the difference between a food chain and a food web.

Back

A food chain shows a single pathway of energy flow, while a food web illustrates all the interconnected food chains in an ecosystem.

Front

What are decomposers and why are they important?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

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.