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WorksheetsFood web/energy flow
Total questions: 66
Worksheet time: 1hrs 16mins
All energy in an ecosystem comes from the sun. This energy is passed through the ecosystem as organisms eat other organsims.
Ominvores
Herbivores
Detritivores
Flow of energy
Animal that gets its energy and nutrition from eating plants.
Parasite
Herbivore
Carnivore
Ominvore
Animal that gets its energy and nutrition from eating meat.
Detritivore
Ominvore
Carnivore
Herbivore
Organisms that produce their own food mostly through photosynthesis (producers). Examples are plants and algae.
Ominvore
Detritivore
Heterotroph
Autotroph
Organisms that get their energy and nutrition from other organisms (consumers).
Heterotroph
Autotroph
Decomposer
Detritivore
Heterotrophs that get energy and nutrition from dead or decaying organisms or their waste products and recycle nutrients back to the ecosystem.
Producer
Trophic
Decomposer
Autotrooph
Heterotrophs that “clean up” the ecosystem by eating dead and decaying organisms.
Autotrophs
Herbivores
Ominvores
Detritivores
The level in an Ecological pyramid that includes all the organisms that share the same place in a food chain.
Trophic Levels
Toxic Levels
KeKe Levels
Environmental Systems
If the alfafa in the energy pyramid above contains 1,000 kilo-calories, what amount of energy would the red-tailed hawk obtain?
1 kilo-calorie
10 kilo-calorie
100 kilo-calorie
1000 kilo-calorie
The carbon cycle is the continual transfer of carbon atoms in nature. The cycling of carbon is important because it is the building block of life.
Label each process in the carbon cycle diagram
The carbon cycle is the continual transfer of carbon atoms in nature. Match the process in the diagram with their role in the carbon cycle.
Energetic process in which photosynthetic organisms absorb carbon dioxide to make carbon-containing carbohydrates.
B
Carbon-containing molecules are transferred from prey to predator during consumption.
E + F
Carbon dioxide is returned to the atmosphere during the burning of carbon-containing materials.
N
When an organism dies, decomposers return some carbon dioxide to the atmosphere.
H
Energetic process in where animals, plants, and bacteria break down carbon-containing molecules and return carbon dioxide to the atmosphere.
D + G + J
The hydrologic (water) cycle is the circular pathway of water on Earth from the atmosphere, to the surface, below ground, and back.
Label the water cycle diagram with the correct processes.
A food pyramid is shown to represent the transfer of energy in a food chain. Label the amount of energy available to each trophic level if producers have 10,000 kJ of energy.
The carbon cycle is the continual transfer of carbon atoms in nature. The cycling of carbon is important because it is the building block of life.
Label each process in the carbon cycle diagram
The carbon cycle is the continual transfer of carbon atoms in nature. Match the process in the diagram with their role in the carbon cycle.
Energetic process in which photosynthetic organisms absorb carbon dioxide to make carbon-containing carbohydrates.
B
Carbon-containing molecules are transferred from prey to predator during consumption.
E + F
Carbon dioxide is returned to the atmosphere during the burning of carbon-containing materials.
N
When an organism dies, decomposers return some carbon dioxide to the atmosphere.
H
Energetic process in where animals, plants, and bacteria break down carbon-containing molecules and return carbon dioxide to the atmosphere.
D + G + J
The hydrologic (water) cycle is the circular pathway of water on Earth from the atmosphere, to the surface, below ground, and back.
Label the water cycle diagram with the correct processes.
The hydrologic (water) cycle is the circular pathway of water on Earth from the atmosphere, to the surface, below ground, and back.
Match the process in the water cycle with is function.
Process in which liquid water changes into water vapor.
B
Process in which water vapor turn into liquid water. Creates clouds, fog, dew.
C
Process in which rain, sleet, snow, or hail falls from the sky.
D
Water that runs on the ground into lakes, rivers, and streams.
E
Process in which water is taken through a plant’s roots and evaporates from the plants leaves.
A + G
A food pyramid is shown to represent the transfer of energy in a food chain. Label the amount of energy available to each trophic level if producers have 10,000 kJ of energy.
A food web is a model that shows the complex network of feeding relationships and the flow of energy within and sometimes beyond an ecosystem.
Label the roles that each organism plays in this forest food web
A food chain is a model that shows a sequence of feeding relationships between a producer ( (a) ), and consumers ( (b) ). There are several types of consumers. (c) eat only plants. (d) eat other animals. Omnivores eat both plants and animals. (e) are detritivores that break down organic matter into simpler compounds meaning they recycle matter.
In the ecological pyramid circle every word that applies, or describes each trophic level.
Plants, algae, or bacteria that produce their own food via photosynthesis or chemosynthesis. (a)
Plant eating organisms or herbivores. (b)
Carnivores that eat herbivores. (c)
Carnivores which eat other carnivores. (d)
Organism, especially a soil bacterium, fungus, or invertebrate, that break down organic material. (e)
The diagram shows a partial food web. Food webs such as the one shown were first used in 1927 by the animal ecologist Charles Elton.
Which of the following transfers is the MOST ENERGY EFFICIENT for the hawk?
grass → grasshopper → frogs → snake → hawks
shrubs → mice → hawks
shrubs → mice → snake → hawks
grass → grasshopper → snake → hawk
In the ecological pyramid circle every word that applies, or describes each trophic level.
Plants, algae, or bacteria that produce their own food via photosynthesis or chemosynthesis. (a)
Plant eating organisms or herbivores. (b)
Carnivores that eat herbivores. (c)
Carnivores which eat other carnivores. (d)
Organism, especially a soil bacterium, fungus, or invertebrate, that break down organic material. (e)
The diagram shows a partial food web. Food webs such as the one shown were first used in 1927 by the animal ecologist Charles Elton.
Which of the following transfers is the MOST ENERGY EFFICIENT for the hawk?
grass → grasshopper → frogs → snake → hawks
shrubs → mice → hawks
shrubs → mice → snake → hawks
grass → grasshopper → snake → hawk
Where is the most energy in an energy pyramid found?
The base
The top
The middle
Why are there less animals at the top of the energy pyramid? (Select all that apply)
Energy is lost as heat
Energy is gained as heat
More energy available to reproduce
Less energy available to reproduce
The ___% rule states that only ____% of energy is transferred to the next trophic level.
10%
25%
50%
100%
How much energy is transferred to the next trophic level?
10%
90%
What happens to 90% of the energy in each trophic level?
It turns into chemical energy
It is lost as heat.
It is used for metabolic processes
All of the energy is used and none of it moves to another level
Mice eat seeds, nuts and berries they belong in which TROPHIC level on an energy pyramid?
Level 1: Producers
Level 2: Primary consumers
Level 3: Secondary consumers
Level 4: Tertiary consumers
As you go up a food chain, food web or energy pyramid, energy
increases
decreases
What do the arrows show in a food chain?
They point to the smallest animals.
They point to the animal that tastes the best.
They point to just the producers.
They point in the direction that energy is flowing.
Select any animal that is just a carnivore
Select all of the organisms in the food chain from Phytoplankton to Tundra Swans
Select any animal that is just an herbivore
Select any animal that is just an omnivore
If there was an increase in the elf owl population size there would be an (a) in the population sizes of the (b) , and the red harvester ant.
If there's 20,000 kcal on the producer level of this trophic pyramid, how many kcal will be passed on to the primary consumers?
Assuming that there's 20,000 kcal on the producer level of this trophic pyramid, how many kcal will be passed on to the quaternary consumers?
How are primary consumers different from secondary consumers?
Primary consumers eat only plants;secondary consumers eat other consumers.
Primary consumers eat other consumers;secondary consumers eat only plants.
primary consumers eat plants and other consumer;secondary consumers eat plants and decompose matter
Primary consumers eat plants and decompose matter ;secondary consumers consumers eat plants and other consumers.
An organism that recycles nutrients through an ecosystem by consuming dead plants or animals is known as a(n)...
Herbivore
Apex Predator
Producer
Decomposer
Total amount of living tissue within a given trophic level.
Biomass
Nutrients
Biotissue
Phytoplankton
The diagram above shows a partial food web. Based on the food web, which of the organisms acts as both a primary consumer and a secondary consumer?
Fox
Mouse
Rabbit
Toad
The flowchart shows the unidirectional flow of energy through a food chain and the cycling of matter in nature.
How would the absence of decomposers most significantly affect the flowchart?
The flow of energy would be affected.
The dissipation of energy would be less.
It would stop the cycling of matter in nature.
The supply of nutrients for the producers would be less.
Which of the following represents a food chain in the food web above?
copepods → snapper → seal → orca
diatoms → copepods → killifish → snapper → seal
orca → herring → snapper → killifish → copepod → diatom
squid → bluefish → herring → mackerel
Examine the food web above. Which pair of consumers in this food web has the greatest amount of energy available for consumption?
hawk and mountain lion
rabbit and grasshopper
snake and songbird
trees and grass
The diagram above shows a partial food web. Food webs, such as the one shown, were first used in 1927 by the animal ecologist Charles Elton.
Which of the following transfers is the most energy efficient?
Plant → Grasshopper → Toad → Snake
Plant → Mouse → Fox
Plant → Grasshopper → Mouse → Fox
Fox → Plant → Mouse
