Ecology Review

Barnacles attach themselves to whales. The whales are so large that they are seemingly unaffected. The barnacles get a habitat and food when the whale enters an area with abundant food resources. What type of relationship exists between the whale and the barnacle?

• mutualism
• commensalism
• parasitism
• predation

Animals, such as fiddler crabs, advertise the size of their enlarged claw to intimidate their rivals. This territorial display is an example of what type of relationship?

• predation
• commensalism
• competition
• mutualism

Tags

NGSS.MS-LS2-2

Which of these best describes the role of microorganisms in the carbon and nitrogen cycle? 

•   Disrupts the health of organisms in the ecosystem 
• Causes disease in plants and animals 
• Aids in the processes of decomposition 
• Aids in the cycling of nutrients in the ecosystem 

Tags

NGSS.MS-LS2-3

Which scenario would best allow the long-term survival of a native herbivore in a grassland ecosystem? 

• New producer species immigrates to the ecosystem and increases the diversity of producers. 
• The population size of the herbivore's predators and the grasses they eat remain constant. 
• Humans in the ecosystem reduce the number of predators in the area. 
• A new herbivore that feeds on the same plants immigrates to the ecosystem 

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What best describes the type of relationship that occurs between grasshoppers and mice? 

• Commensalism
• Predation
• Mutualism
• Competition

Tags

NGSS.MS-LS2-2

According to the food web, which of the following organisms can be classified into more than one trophic level? 

• grasshopper
• owl
• rabbit
• frog

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Which of the following is abiotic?

• A tree in a forest.

• Wood from the tree on the forest floor.

• A termite on the tree.

• The soil the tree is growing in.

Tags

NGSS.MS-LS2-3

An ongoing relationship in which one organism benefits and the other is harmed.

• A. Predator & Prey

• B. Mutualism

• C. Commensalism

• D. Parasitism

There are birds that eat the food from between the teeth of alligators, leaving the alligators with clean teeth and the birds with a meal. What type of ongoing relationship is this?

• A. Predator & Prey

• B. Mutualism

• C. Commensalism

• D. Parasitism

Tags

NGSS.MS-LS2-2

Some limiting factors that affect populations include lack of food, lack of water, lack of living space, and the spread of disease.

• True

• False

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4