Science Ecology

Which type of ecological succession does this picture show?

• secondary succession

• tertiary succession

• primary succession

Tags

NGSS.MS-LS2-4

True or False? During primary succession, the area does not have any living organisms in the beginning. It also does NOT contain soil until the first living species arrives.

• True

• False

The first living species in an ecosystem is called a:

• false species

• pioneer species

• pilot species

• consumer species

In secondary succession, an ecosystem has undergone a forest fire, flood or clearing of the land. What is left after most of the living organisms have been destroyed?

• huge trees

• rock

• soil

• nothing

Tags

NGSS.MS-LS2-4

What does this graph show?

• There are always more predators than prey

• The number of predators depends on the number of prey

• The number of predators equals the number of prey

Tags

NGSS.MS-LS2-2

Which of these are biotic factors in an ecosystem?

• ph of water, bacteria, sun

• sun, temperature, humidity, water

• plants, pigs, mushrooms, bacteria

• rocks, mountains, clouds

Tags

NGSS.MS-LS1-4

NGSS.MS-LS2-4

Which of these are abiotic factors in an ecosystem?

• rocks, sun, water, temperature

• plants, soil, insects

• cows, mules and water

• flowers, sun, dogs

____________________________________ is when all biotic and abiotic factors in an ecosystem depend on each other for survival.

• Producers

• Omnivores

• Interdependence

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

producer is something that:

• Eats plants

• Makes its own food

• Eats animals

• Eats plants and animals

Producers are always at the __________ of a food chain or food web.

• Beginning

• Middle

• End

• Producers are not part of the food chain