IB ESS Topic 2.2

Front

What does the Greenworld Hypothesis propose about higher trophic levels?

Back

Higher trophic levels control herbivore abundance, which helps maintain the green plant cover in ecosystems.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Front

Which organisms provide energy to the hawk in the food chain?

Back

The hawk receives energy from shrews and rabbits.

Tags

NGSS.MS-LS2-3

Front

If there are 40,000g of biomass energy available at trophic level one, how much energy is available for the tertiary consumer?

Back

40g of energy is available for the tertiary consumer.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Front

What animal preys on the caracal?

Back

The caracal is preyed upon by snakes.

Front

What is the role of a decomposer in an ecosystem?

Back

A decomposer breaks down and absorbs dead matter, recycling nutrients back into the soil.

Tags

NGSS.MS-LS2-3

Front

Define 'trophic level' in an ecosystem.

Back

A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients from one level to the next.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Front

What is the significance of herbivores in an ecosystem according to the Greenworld Hypothesis?

Back

Herbivores are controlled by higher trophic levels, which helps prevent overgrazing and promotes plant diversity.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Front

Explain the concept of biomass in ecological terms.

Back

Biomass refers to the total mass of living matter within a given area or volume, often measured in grams.

Tags

NGSS.MS-LS2-3

Front

What is the difference between primary consumers and secondary consumers?

Back

Primary consumers eat producers (plants), while secondary consumers eat primary consumers (herbivores).

Tags

NGSS.MS-LS2-3

Front

How does energy transfer between trophic levels in an ecosystem?

Back

Energy transfer between trophic levels is inefficient, with only about 10% of energy being passed from one level to the next.

Tags

NGSS.MS-LS2-3