Environmental Science - Ecology Unit 1.1

Which trophic level has the least energy available and the least biomass? (click picture)

• Trophic level 1

• Trophic level 2

• Trophic level 3

• Trophic level 4

plants and autotrophic algae are ?

• producers

• consumers

• decomposers

• scavengers

name a producer in this food web (click image)

• shrimp

• phytoplankton (green algae)

• fish

• eagles

Which definition best fits the term BIOTIC?

• The study of the interactions between animals and their environment

• Factors in the environment that are considered not alive

• Factors in the environment that are considered living or the remains of living things

An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:

• 
  Predator

• Autotroph

• Producer

• Decomposer

The ARROWS in a food chain or web represents what?

• point to the organism that is being eaten.

• shows how sunlight flows within an ecosystem.

• show direction the energy is flowing between organisms. 

• represent how water is transferred within a habitat.

The fox in this food web would be considered a:

• Tertiary Consumer

• Producer

• Secondary Consumer

• Primary Consumer

Which organisms will most likely INCREASE in population if a disease that suddenly reduced the population of Texas horned lizards?

• Grasses and ants

• Ants and grasshoppers

• Grasshoppers and Texas Cottonmouths

• Texas cottonmouths and red shouldered hawks

What happens to the amount of available energy in the pyramid as it moves up through the different levels?

• it decreases

• it increases

• it remains the same

What % of energy is transferred from one trophic level to the level above ?

• 0%

• 10%

• 90%

• 100%