Energy Flow SC.912.L.17.9 Use a food web to identify and distinguish producers, consumers, and decomposers. Explain the pathway of energy transfer through trophic levels and the reduction of available energy at successive trophic levels Source: http://www.bigelow.org/bacteria/land.jpg
36
Embed
Energy Flow SC.912.L.17.9 Use a food web to identify and distinguish producers, consumers, and decomposers. Explain the pathway of energy transfer through.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Energy Flow
SC.912.L.17.9
Use a food web to identify and distinguish producers, consumers, and decomposers. Explain the pathway of energy transfer through trophic levels and the reduction of available energy at successive trophic levels Source: http://www.bigelow.org/bacteria/land.jpg
What do I need to know?
how to use a food web to identify producers, consumers, and decomposers
the pathway of energy transfer through trophic levels and the reduction of available energy at successive trophic levels
how matter and energy move through the water and carbon cycles
Food Chains vs. Food Webs
Food chains are linked together into food webs Who eats whom? What type of
organism do they both begin with?
How does energy flow from the sun to producer to the consumers?
Show What You KnowA team of ecologists observed feeding patterns of several populations in the desert. The energy pyramid shown below depicts the feeding patterns the ecologists observed.
Show What You KnowWhich of the following best explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?
A. There is less energy available in the producers because their tissues are less dense than those at higher trophic levels.
B. There is more energy available in the second trophic level because less energy is needed for hunting compared to the higher trophic levels.
C. There is more available energy in the birds of prey because they have greater muscle mass for storing energy than organisms in lower trophic levels have.
D. There is less available energy in the fourth trophic level because of the loss of energy through metabolism in each of the lower trophic levels.
Show What You Know
The table below contains information about animal diets.
Which energy pyramid best represents the data in the table??
Animals Diet
Snakes Squirrels, chipmunks, gophers and mice
Hawks and owls Rodents and reptiles
Rodents Seeds, nuts, root, grass leaves and flowers
Show What You Know
Show What You Know
Which model correctly shows energy flow in a food chain?
A. plants insects salmon bears
B. insects plants bears salmon
C. bears salmon insects plants
D. salmon bears plants insects
Show What You KnowWhich diagram correctly shows the direction of energy flow through a food web?
Show What You KnowPart of an everglades food web is diagrammed below.
Which of the following will most likely result if all of the primary consumers are removed from this ecosystem?
A. Raccoons will become herbivores.
B. American alligator populations will decrease.
C. Grass carp will consume soil bacteria.
D. Bladderwort and Butterfly orchid populations will decrease
Show What You KnowA student set up a terrarium, watered the soil, and covered the terrarium tightly with a lid. The next day, the student observed water droplets on the inside of the lid.
The droplets provide evidence that which of the following steps of the water cycle had occurred in the terrarium?
A. runoff and evaporation
B. precipitation and runoff
C. evaporation and condensation
D. condensation and precipitation
Show What You Know
Use the diagram of the water cycle to answer the following question.
Show What You Know
Which terms match the number order of the processes shown in the water cycle?
1 2 3
A vaporation precipitation condensation
B condensation evaporation precipitation
C precipitation condensation evaporation
D evaporation condensation precipitation
Show What You Know
Which process is not essential for the water cycle to occur?
A. water vapor condensing
B. energy being transferred from the Sun
C. liquid water evaporating
D. oxygen being dissolved in water
Show What You KnowThe natural cycling of oxygen between organisms and their environment is most directly accomplished through which of the following pairs of processes?
A. fermentation and oxidation
B. transpiration and evaporation
C. precipitation and condensation
D. photosynthesis and respiration
Show What You Know
The diagram below shows part of the carbon cycle.
Show What You Know
If many trees are removed from a forest by logging, what is the most immediate effect on the carbon cycle in that forest?
A. increased rates of decomposition
B. decreased use of atmospheric CO2
C. decreased combustion of fossil fuels
D. increased production of organic compounds
Show What You KnowThe diagram shows the flow of carbon in a terrestrial ecosystem.
Which will most likely happen if the decomposers are removed from the carbon cycle?
A. The amount of carbon dioxide in the atmosphere will increase.
B. The amount of carbon dioxide in the atmosphere will decrease.
C. The amount of carbon dioxide used by producers will increase.
D. The amount of carbon dioxide needed by consumers will decrease.