7th Grade ecosystems

What do you call a symbiotic relationship where both parties benefit?

• Parasitism

• Commensalism

• Mutualism

• Predation

Referencing the food web shown, what is the primary energy source?

• seaweed

• phytoplankton

• killer whale

• sun

Answer explanation

The sun is the primary energy source of the food web in both land and sea because of photosynthesis.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A scientist is walking through the Florida everglades and realizes that there is a leach on his hand. What kind of relationship is this?

• commensalism

• egotism

• parasitism

• decomposition

Mrs. Chatfields class studied the effects of Human factors in tadpole populations in two different locations. One location was in a retention pond in a new housing development and the other in a remote part of Spruce Creek. Out of the two locations, which one would have the lowest tadpole population?

• A retention pond in a new housing development

• A remote part of Spruce Creek

• Indian River

• Lake Okeechobee

• Edgewater swimming Pool

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is one way to combat air pollution in Florida?

• build more factors

• Burn forests

• build more trains

• Make more cars

Answer explanation

Trains emit less carbon emission than cars, thus causing less air pollution.

Tags

NGSS.MS-ESS3-3

What is the mouse in this food chain?

• Producer

• Primary Consumer

• Secondary Consumer

• Tertiary Consumer

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Omnivores eat plants and meat.

• True

• False

Heterotrophs make their own food

• True

• False

Answer explanation

Autotrophs make their own food through photosynthesis, whilst heterotrophs consume their food.

You live on a farm where you feed rabbits. As the population of rabbits increases, the grass on your farm decreases. What effect does this have on the food chain?

• Only secondary consumers would be affected.

• Only tertiary consumers would be affected.

• Only producers will be affected

• all the listed options would be affected

• Only primary consumers would be affected

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

This chart represents the population growth of the American Bald Eagle in Alaska. What years did the Bald Eagle population decrease?

• 2005-2015

• 1990-2000

• 2000-2010

• 2010-2020