UNIT 1 ECOLOGYBiology Review PowerPoint

Review Question 1:

Which of the following chain of energy flow would give the end consumer the least amount of energy?

A. Grass grasshopper robin hawkB. Grass mouse wolfC. Grass grasshopper frog snake

hawkD. Grass mouse snake hawk

Where does 90% of the Energy “lost” actually go when E is transferred from one trophic level to

the next?

Review Question 2:

Fungi, such as mushrooms and molds, get their nutrition primarily by —

Aproducing food through chemosynthesis

B preying on other organismsCdecomposing dead organic matter

D parasitic relationships with plants

Why are decomposers important?

Review Question 3

If a population grows larger than the carrying capacity of the environment, the ______.

Adeath rate may riseBbirth rate may fallCbirth rate may riseD death rate may fall

What is carrying capacity?

Review Question 4

NY Regents

BIO

Review Question 6

An example of a population is-1 all the Zapus hudsonicus in California2 all the fish in Lake Erie3 the number of different species of Felis in ageographic area4 the number of maples, white oaks, spruce,gray squirrels, and owls in a forest

Review Question 7

Which of the following practices is MOST likely to slow the buildup of CO2 in the atmosphere?

From: Georgia-End-of-Course Assessments, Spring 2004

A increased use of tropical rain forest areas for agricultureC decreased pesticide use in favor of biological controlsB increased use of genetically engineered plantsD decreased use of fossil fuels

Review Question 8

The maintenance of a self-sustaining ecosystem requires a - 1 constant temperature 2 greater number of herbivores than producers 3 cycling of materials between organisms and their environment 4 soil that is acidic

Review Question 9

A food web is shown below:

Which organisms are necessary for the recycling of Nitrogen?1 frogs 2 snakes3 grasshoppers 4 bacteria

Review Question 10

In a forest ecosystem, which is an abiotic factor?

From: North Carolina End-of-Course Assessments, Goal 5

A amount of rainfallB type of treesC number of reptilesD size of deer

Why is this considered

abiotic?

Review Question 11

What is the main cause of fish kills in rivers polluted by fertilizers?

From: Virginia SOL Assessments, 2002 Biology

A Decreased mineral sources

C Increased water temperatures

B Decreased oxygen levelsD Increased water levels

Review Question 12

The diagram below shows a food pyramid.

Which level of the food pyramid contains consumerswith the least biomass?1 snakes 3 crickets2 frogs 4 green plants

Review Question 13

Which letter represents a photosynthetic organism?

a.Ab.Bc.Dd.E

Review Question 14

Which property of the local ecosystem is being described?a. Food production c. Biodiversityb. Abiotic conditions d. Energy interdependence

Study the table below:

Last Question!

The above graph shows how dissolved O2 and CO2 levels changed in a pond over a 24-hour period. What caused the decrease in O2 concentration during the night?A increased evaporation B decreased photosynthesisC increased respiration D decreased temperatures