Unit 1 Review Lesson

Unit 1
Review Lesson

This lesson is your review for the unit 1 test tomorrow.

Be sure to complete this in class today - your score will go into PowerSchool.

Part 1: Ecosystem Organization

Multiple Choice

Which term means all the members of every species that live in an area and the abiotic factors they interact with?

• population
• community
• ecosystem
• biosphere

Multiple Choice

Is a fern an abiotic or biotic factor? 

• abiotic
• biotic

Multiple Choice

Which of the following would correctly describe one female arctic fox?

• biome

• community

• ecosystem

• organism

Multiple Choice

Is a weather an abiotic or biotic factor? 

• abiotic
• biotic

Multiple Choice

What are the ecological levels of organization from smallest to the largest?

• organism, population, community, ecosystem

• organism, community, population, ecosystem

• organism, population, ecosystem, community

• organism, ecosystem, population, community

Multiple Choice

Which is an abiotic factor?

• fungi

• predators
• water
• food

Multiple Choice

Jacob is going out to his grandparents' farm.  On the farm is a rocky stream with many different species of fish as well as maple and oak trees and dragonflies.  What is Jacob experiencing?

• organism
• population
• community
• ecosystem

Part 2: Limiting Factors and Carrying Capacity

Multiple Choice

In this graph, what is the population of deer at the carrying capacity of the environment?

• 50

• 80

• 70

• 40

Multiple Choice

This graph shows the interaction of the wolf and moose populations on Isle Pekie. If the moose population continues to increase, the wolves' food supply will increase. What will most likely happen to the wolf population as a result?

• It will decrease.

• It will increase.

• It will remain the same.

Part 3: Symbiotic Realtionships

Commensalism

symbiotic relationship in which one organism benefits, and the other in not affected

Example of Commensalism

Barnacles and Whales....

Barnacles are small crustaceans who do not move much on their own during their adult life. They attach themselves to larger organisms, such as a whale, to be transported to new food sources. This does not help or hurt the whale in any way.

Mutualism

• a relationship where both organisms benefit

Example of Mutualism

Lichen and Fungus

Lichen provides energy to fungus, while fungus gives the lichen a place to grow.

Parasitism

a symbiotic relationship in which one species benefits while the other is harmed.

Not the same as predator/prey

Parasitism

• The organism that is being benefitted is called the Parasite

• The organism that is being harmed is called the Host

Example of Parasitism

Trees and Fungus

The fungus (parasite) gets nutrients by breaking down the tree (host). As a result, the tree decays, gets weak, and becomes very vulnerable to the weather. The reason why this is an example of parasitism is because only one organism benefits, the fungus, while the tree is harmed.

Multiple Choice

A relationship between two organisms in which one organism benefits and the other is unharmed...

• Mutualism

• Commensalism

• Parasitism

Multiple Choice

A relationship between two organisms in which both organisms benefit.

• Mutualism

• Commensalism

• Parasitism

Multiple Choice

A relationship between two organisms in which one is benefited and the other is harmed.

• Mutualism

• Commensalism

• Parasitism

Multiple Choice

Ostriches and gazelles eat together. They both watch for predators and danger. Since they see things differently, they each can identify threats the other animal may not see.

• mutualism

• commensalism

• parasitism

Multiple Choice

Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers and the eggs hatch. The larvae eat some of the seeds and spread them around so new flowers can grow in different places.

• mutualism

• commensalism

• parasitism

Multiple Choice

Mistletoe takes water and nutrients from the oak tree.

• mutualism

• commensalism

• parasitism

Multiple Choice

A bison walks through the grass, insects fly up and are seen and eaten by egrets. This neither harms nor helps the bison, but it is easier for the egrets to get food.

• mutualism

• parasitism

• commensalism

Multiple Choice

A flea feeds on a mouse’s blood.

• mutualism

• commensalism

• parasitism

Multiple Choice

Hermit crabs live in shells that snails don't use anymore.

• mutualism

• commensalism

• parasitism

Multiple Choice

Birds build nests out of dead twigs and leaves. They build their nests in living trees. This doesn't hurt the tree.

• mutualism

• commensalism

• parasitism

Multiple Choice

Which symbols best describe parasitism?

• +,+
• +,-
• +,0
• -,0

Multiple Choice

A coyote captures, kills, and eats a rabbit. What type of symbiotic relationship is this?

• mutualism
• commensalism
• parasitism
• predation

Multiple Choice

A tapeworm lives in the intestines of a dog. It absorbs food the dog has eaten and grows larger in the process. The dog becomes weaker from malnutrition. What type of symbiotic relationship is this?

• mutualism
• commensalism

• parasitism
• predation

Multiple Choice

Which symbols best describe mutualism?

• +,+
• +,-
• +,0
• -,0

Multiple Choice

Some plants grow quickly and taller than other plants. The taller plants get more sunlight.

• Competition
• Predation
• Mutualism
• Commensalism

Multiple Select

Mosquitoes are parasitic with humans because: (choose 2)

• They feed off human blood

• The human host is harmed

• They are annoying

• they spread disease

Multiple Choice

Wolves hunt in packs and share the prey that is caught and killed.

• coexistence

• cooperation

• competition

• commensalism

Multiple Choice

Which of the following best describes a difference between a mutualistic relationship and a parasitic

relationship?

• Parasitism harms both organisms, while mutualism harms only one organism.

• Parasitism benefits only one organism, while mutualism benefits both organisms.

• Parasitism involves only two organisms, while mutualism involves many organisms.

• Parasitism continues for many generations, while mutualism is limited to one generation.