APES VOCABULARY REVIEW _ BENCHMARK 2

Front

What is the main cause of biodiversity loss worldwide?

Back

Habitat destruction.

Front

If the GPP of a producer is 5,000 gC/m²yr and the NPP is 4,000 gC/m²yr, what is the respiratory energy needed by the autotrophs?

Back

1,000 gC/m²yr.

Front

How long will it take for a population of 50,000 to double at a growth rate of 2%?

Back

35 years.

Front

Which statement about autotrophs is incorrect?

Back

They convert carbon dioxide and water into carbohydrates in the absence of sunlight.

Front

What type of strategists grow slowly over time and care for their young over a long period?

Back

K-strategists.

Front

Define Gross Primary Productivity (GPP).

Back

The total amount of carbon fixed by photosynthesis in a given area and time.

Front

Define Net Primary Productivity (NPP).

Back

The amount of carbon that remains after autotrophs have met their respiratory needs; NPP = GPP - Respiration.

Front

What is a K-strategist?

Back

A species that produces fewer offspring but invests more time and resources in raising them.

Front

What is an R-strategist?

Back

A species that produces many offspring but invests little in their survival.

Front

What is the significance of carrying capacity in an ecosystem?

Back

It is the maximum population size that an environment can sustain indefinitely.