Review for 8th Science FCAT (Food Webs & Symbiosis)

All energy transformations in an ecosystem begin with

• a scavenger
• the sun
• a decomposer
• a herbivore

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

a deer population has significantly increased, the best hypothesis is 

• the deer's main predator has been eliminated
• competition increased
• decreased water levels of local ponds
• organisms that rely on similar food sources migrated to the area

Tags

NGSS.MS-LS2-4

Which event is the best example of competition between species in a pond?

• dragonflies landing on lily pads
• lizards and snakes lying in the sun
• hawks eating mice
• frogs and toads eating flies

Tags

NGSS.MS-LS2-2

Birds eat insects off the skin of cows. If the relationship is a type of mutualism, then the organisms that will benefit are

• only the cattle

• neither the birds or the cattle

• both the birds and the cattle

• only the birds

Tags

NGSS.MS-LS2-2

Which relationship describes predator/prey

• hawks and shrubs
• mountain lion and deer
• frogs and trees
• grasses and crickets

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

an organism that can produce its own food through photosynthesis

• consumer
• heterotroph
• autotroph
• herbivore

Tags

NGSS.MS-LS1-6

Commensalism is

• one species benefits, the other is not affected
• both species benefit
• both species are harmed
• one species benefit, the other is harmed

An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph
• Producer
• Consumer
• Mutualist

Tags

NGSS.MS-LS2-3

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

Tags

NGSS.MS-LS2-3

Why is there a limited amount of energy that can be passed on to the next feeding level?

• There is never enough sunlight available. 
• Some ecosystems have limited resources. 
• Organisms use some of the energy they get from eating.
• All the energy is available to be passed on. 

Tags

NGSS.MS-LS2-3