Ecosystems dynamics, biodiversity and natural resources

Which relationship would best be described as mutualism?

• An oxpecker (bird) eats the insects off of a zebra's back

• A lion attacks and eats a gazelle

• A tapeworm invades the gut of a mammal

• An eagle pair take turns bringing materials for their nest.

Tags

NGSS.MS-LS2-2

What is the organism that is harmed in a parasitic relationship?

• parasite

• consumer

• host

• victim

Fleas would be an example of

• hosts

• parasites

• predators

• prey

Plants need light, water and carbon dioxide for photosynthesis. This is an example of an organism interacting with

• biotic factors.

• abiotic factors.

• food webs.

• chemicals.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which two populations would increase if the grasshopper population increased?

• deer and rabbit

• rabbits and hawks

• squirrel and snakes

• shrews and insect-eating birds

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What do the arrows represent in a food web?

• Nothing

• The direction of energy flow

• Symbiotic relationships

• Commensalistic relationships

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A disease decimates the rabbit population. Which of these species is likely to suffer first?

• Moutain Lion

• Squirrel

• Snakes

• Deer

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Any organism that creates it's own food through photosynthesis is called a(n)

• consumer

• producer

• apex predator

• prey

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

This is a food web of a marine ecosystem. The heron would be considered a

• secondary consumer

• primary consumer

• producer

• scavenger

An example of a decomposer would be

• a butterfly

• green grass

• a clump of mushrooms

• a bear

Tags

NGSS.MS-LS2-3