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WorksheetsUnit 7 - Food Webs/ Ecosystems/ Changing Environments
Total questions: 14
Worksheet time: 7mins
A student makes the following observations while looking at the classroom terrarium:
Observation 1 - Water dripped off of the African violet flower petal and was absorbed in the soil.
Observation 2 - The salamander climbed off of the rock and ate a leaf from the fern.
Observation 3 - The walking stick bug moved up the branch of the jade plant.
Observation 4 - The tree frog used its long tongue to catch and eat a flying insect.
Which observation demonstrates an organism interacting with ONLY NONLIVING elements of its environment?
Observation #1
Observation #2
Observation #3
Observation #4
The Osage Orange is a deciduous tree that grows to about 45 feet tall. It produces a round, bumpy fruit filled with seeds and sticky latex. Its branches are lined with large thorns. The roots are thick and covered with bright orange bark.
According to the information and image shown above, how does this type of root system benefit the Osage Orange?
The roots allow the tree to produce fruit so animals have food in the winter.
The roots allow the tree to capture sunlight so the tree can produce carbon dioxide.
The roots allow the tree to provide the soil with nutrients so the branches can produce thorns.
The roots allow the tree to absorb nutrients and water so the tree can increase in size.
In a desert habitat, many animals are nocturnal. They sleep in cool dens, caves, or burrows during the day. They hunt for food at night when the temperatures are cooler.
How do desert animals use NON-LIVING elements in their habitats to help them survive?
They are most active at night.
They sleep during the hottest part of the day.
They use dens and caves to stay out of the heat.
They hunt smaller animals that live in the desert.
Which of the following best illustrates the direction of energy flow through the food web above?
Spider to Grasshopper to Grass
Hognose Snake to Toad to Grasshopper
Grass to Rabbit to Hawk
Mouse to Rabbit to Hawk
An organism is missing from the diagram above of a partial food web.
What claim can be made about the missing organism based only on the information provided?
The organism is a carnivore.
The organism is classified as a decomposer.
The organism competes with the squirrel for food.
The organism is an energy source for the oak tree.
Which of the following food chains shows the correct relationship between the classifications of organisms?
consumers → decomposers → producers
decomposers → producers → consumers
consumers → producers → decomposers
producers → consumers → decomposers
The Florida's Everglades is a tropical wetlands ecosystem.
According to the diagram above, what would be the most likely change to the ecosystem if the largemouth bass population greatly decreased?
The mud turtle population would decrease.
The raccoon population would decrease.
The American alligator population would increase.
The mosquitoes would be eliminated.
Which factor would most likely cause a decrease in the average level of carbon dioxide in the atmosphere?
Cutting down large forests
Planting several trees
An increase in animal populations
The picture above shows a highway that was built through a wooded area. Some trees were cut down to create space for the road. The remaining woods line both sides of the highway.
Which of the following will most likely happen to the ecosystem as people begin DRIVING on the highway?
The highway will soon be overgrown by trees as new seedlings sprout in the road.
New animal populations will move to the area increasing the ecosystem diversity.
Animal populations will decrease in size because some individuals are struck by cars.
Animals that live in trees will decrease because they will have to move to a different forest.
Observe the “Food Sources of Texas Butterflies” table above.
Based on the information, which butterfly species would be least affected by a drought that reduces the amount of available nectar?
Pearl Crescent
Gulf Fritillary
Question Mark
Common Buckeye
The table below lists ways that four organisms obtain energy.
OAK TREE - Produces food through photosynthesis
MUSHROOM - Absorbs nutrients from decomposing plants and animals
COTTONTAL RABBIT - Eats grasses, twigs, and bark
MOUNTAIN LION - Preys on deer, wild hogs, and rodents
Which organism obtains energy without depending on another organism?
Oak Tree
Mushroom
Cottontail Rabbit
Mountain Lion
In this food web, energy is transferred directly between...
conifer seeds and red crossbills
conifer leaves and northern goshawks
blue grouse and wolves
elk and sharp-skinned hawks
Prairie dogs eat plants and dig underground tunnels. Prairie dog tunnels help break up hard soils, and the animals' waste adds nutrients to the soil. In the past, large groups of prairie dogs lived in many parts of the U.S. Great Plains, but people have destroyed most of these colonies.
Which of these will most likely happen when prairie dogs are removed from an area?
The population of predators that eat prairie dogs will increase.
The population of plants that prairie dogs eat will increase.
The nutrients in the soil will increase.
The number of undergrounf tunnels will increase.
The nesting habits of 4 types of bird are listed below:
1. Baltimore Oriole - the nest hangs from thin branches in tall trees.
2. Barn Swallow - The nest is attached under the roof of a barn or house.
3. Downy Woodpecker - The nest is dug into rotting or decaying trees.
4. Belted Kingfisher - The nest is built in tunnels or burrows.
If all the dead branches and dying trees in a wooded area are removed, which bird's nesting habit would be most affected??
Baltimore Oriole
Barn Swallow
Downy Woodpecker
Belted Kingfisher
