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WorksheetsFood Chains and Food Webs
Total questions: 10
Worksheet time: 9mins
In the food chain:
grass > grasshopper > frog > snake
what organism is the producer?
grass
grasshopper
frog
snake
Which organisms within this ecosystem contain the most energy?
Cacti and Sagebrush
Tarantulas and Snakes
Snakes and Rats
Hawks and Coyotes
What do the arrows indicate in a food chain?
The arrows show the direction in which heat flows
The arrows show the predator-prey relationships within an ecosystem
The arrows show what the organisms eats
The arrows show the direction in which energy flows
An energy pyramid depicts an ecosystem's trophic levels.
Why is the bottom trophic level of an energy pyramid typically larger than the top trophic level?
Producers contain the greatest amount of energy in comparison to the other trophic levels.
Primary consumers have the greatest amount of energy in comparison to the other trophic levels
There are more herbivores in an ecosystem than any other trophic level
There are more secondary consumers in an ecosystem than any other trophic level
A food chain is shown.
Which sentence best describes how energy flows through this food chain?
The soil bacteria transforms chemical energy into radiant energy
The grass transforms radiant energy into chemical energy
The energy from each organism is lost in the soil bacteria
The prairie dog receives its energy from the coyote
Which answer best describe the Orca/Killer Whale in its food web?
The Orca is an apex predator
The Orca is a secondary consumer
The Orca is a carnivore
All of the above
When organisms die, the organic matter in their cells and tissues can be consumed by mushrooms, bacteria, and worms for their energy.
What type of organisms are the mushroom, bacteria, and worms?
Primary Consumers
Decomposers
Producers
Herbivores
Mushrooms are decomposers for most North Texas food chains.
Which description best describes how mushrooms would be incorporated into the food chain?
All of the tertiary consumers will have an arrow pointing at the mushrooms because tertiary consumers are at the top of the food chain and transfer their energy to the decomposers
All of the producers will have an arrow pointing at the mushrooms because decomposers receive their energy only from producers
All of the organisms will have an arrow pointing at the mushrooms because decomposers receive their energy from all living things
An arrow will point from the mushrooms to the primary consumers because primary consumers are herbivores and eat mushrooms for energy
How will a large decrease in the number of rats impact the food web shown above?
There will be an increase in the number of ants, tarantulas, and snakes
There will be an increase in the number of snakes, coyotes, and hawks
There will be a decrease in the number of snakes, coyotes, and hawks
There will be a decrease in the number of cacti and sagebrush plants
Analyze the positions of the eagle and the snake in the food web pictured above.
Which of the following statements is correct?
The eagle eats more types of organisms in the food web than the snake does
The eagle eats the same types of organisms as the snake does
The snake eats more types of organisms in the food web than the eagle does
The snake is eaten by the same types of organisms as the eagle is
