IB ESS Topic 2.2

Front

What is a limiting factor?

Back

Any factor that limits population growth.

Front

Give some examples of limiting factors.

Back

Food, water, predators, space, disease, etc.

Front

Which organisms occupy the second trophic level of a food chain?

Back

Herbivores.

Front

What is the primary source of energy for herbivores?

Back

Plants.

Front

What is the role of carnivores in an ecosystem?

Back

They help control the population of herbivores.

Front

What happens to the population of grass/flowers if there is a sudden increase in the cricket population?

Back

There would be a decrease in the grass/flowers population.

Front

What is the relationship between predators and prey in an ecosystem?

Back

Predators hunt prey for energy, affecting prey population dynamics.

Front

What type of organism is a shrew?

Back

A carnivore that feeds on small animals like rabbits.

Front

What is the energy transfer efficiency between trophic levels?

Back

Typically around 10% of energy is transferred to the next trophic level.

Front

What is a food chain?

Back

A linear sequence of organisms through which nutrients and energy pass.