Food Chain/Web
Which organisms in the food chain are producers?
A) The plankton, only
B) The sunlight, only
C) The sharks, flying fish, mackerel, and tuna
D) The sunlight, plankton, and shrimp
A) The plankton, only
A polar bear interacts with abiotic factors in its environment in all of the following ways EXCEPT by —
A) eating fish that it catches.
B) sliding across the ice.
C) blending into the snow to hide.
D) swimming in the cool waters.
A) eating fish that it catches.
A dairy farmer wants his cattle to be able to drink the water in a pond on his property. He uses an herb killer to kill all of the plants in the pond. Which of the following is the most likely outcome?
A) The number of fish in the pond will increase, then decrease.
B) The number of fish in the pond will increase.
C) The number of fish in the pond will remain the same.
D) The number of fish in the pond will decrease.
D) The number of fish in the pond will decrease.
What could a scientist determine about a fossil that has flat, rounded teeth?
A) The organism was once a producer.
B) The organism was only able to eat secondary consumers.
C) The organism was a herbivore.
D) The organism was an omnivore.
C) The organism was a herbivore.
A paleontologist found a fossilized tropical fern in Juneau, Alaska. What can paleontologists predict about the location's past history?
A) Alaska is a cold environment.
B) Tropical ferns are native plants in Alaska and found all over the area of Juneau.
C) Juneau was once a warm environment due to the evidence of the fern.
D) Locals planted the tropical fern to bring a variety of plants in the area. Tropical ferns thrive in this environment.
C) Juneau was once a warm environment due to the evidence of the fern.
A hawk eats a rabbit, and the rabbit eats grass. If the grass production decreased, how would the rest of the food web be affected?
A) The hawk would still have plenty of food.
B) The rabbit population would decrease, and the hawk population would decrease.
C) The hawk would eat other animals, and the rabbit population would stay the same.
D) The rabbit population would increase, and the hawk population would remain unaffected.
B) The rabbit population would decrease, and the hawk population would decrease.
What biotic factors could provide a food source for frogs living near the pond?
A) Plants
B) Insects
C) Alga
D) Fish
B) Insects
Farmers often plant tall trees on the edge of their fields. How does this affect the environment of the field?
A) It keeps the rich soil from blowing away in the wind.
B) It keeps the sunlight from burning the field.
C) It keeps the fields from flooding in the rain.
D) It keeps large animals out of the field.
A) It keeps the rich soil from blowing away in the wind.
The photograph of this fossil shows that an organism had razor sharp teeth and webbed feet. Scientists can assume that this fossil shows that the organism probably —
A) laid eggs.
B) was a plant eater.
C) was a meat eater.
D) walked on four legs.
C) was a meat eater.
The underwater plants do all of the following EXCEPT —
A) remove oxygen from the pond.
B) absorb nutrients from the pond soil.
C) provide food for fish in the pond.
D) provide homes for pond animals.
A) remove oxygen from the pond.
The grasshopper near the pond survives by —
A) eating plants that grow around the pond.
B) using sunlight to manufacture energy.
C) using water to manufacture energy.
D) eating fish that live in the pond.
A) eating plants that grow around the pond.
Two abiotic factors that interact in this environment are the abiotic -
A) sunlight that creates a hot and dry environment by heating the abiotic sand.
B) fish in the river and the abiotic water that they swim around in.
C) roots of the palm trees that grow into the abiotic sand.
D) palm trees that provide shade for smaller abiotic trees.
A) sunlight that creates a hot and dry environment by heating the abiotic sand.
What effect does deforestation have on the environment?
A) Deforestation is helpful to the environment because it allows more sunlight to reach the ground.
B) Deforestation is harmful to the environment because it makes it easier for predators to catch prey.
C) Deforestation is harmful to the environment because it destroys the habitats of local wildlife.
D) Deforestation is helpful to the environment because it creates more room for larger animals.
C) Deforestation is harmful to the environment because it destroys the habitats of local wildlife.
Researchers found seashell fossils, including those from mollusks and coral, in a rock formation high in the Rocky Mountains.
Which statement BEST explains why seashell fossils can be found on some mountains?
A) The rocks formed under water.
B) Rivers carried the rocks up the mountains.
C) The area was a sand dune that hardened as it was covered by water.
D) The mountains split to form canyons that contained organisms with shells.
A) The rocks formed under water.
Communities with cold winters often spread salt on roadways. Salt lowers the melting point of water, which means slippery snow and ice will melt instead of building up on roads. While this does prevent car accidents, it poses certain problems. What is the most serious problem that could occur to local ecosystems due to road salt?
A) Damage to plant life because of excess salt in the soil
B) Accidents involving deer and other animals that lick salt
C) Overpopulation because of fewer fatal accidents
D) Flooding from too much melting ice and snow
A) Damage to plant life because of excess salt in the soil
In a marine food web, krill are eaten by small fish, and large fish eat the small fish. If the krill population dramatically decreased, what would be the immediate effect on the large fish?
A) The large fish would have more food to eat, leading to an increase in their population.
B) The large fish would find other sources of food.
C) The large fish would have less food, leading to a decrease in their population.
D) The large fish population would increase due to less competition.
C) The large fish would have less food, leading to a decrease in their population.
Which of the following is an abiotic factor interacting with a biotic factor in this forest environment?
A) The stream as it provides a place for the fish to swim
B) The large tree as it provides a home for birds and squirrels
C) The fallen tree trunks as they break down and release nutrients into the soil
D) The small fern plants as they provide food for insects
A) The stream as it provides a place for the fish to swim
When sunlight hits Earth, it is absorbed. Trees absorb sunlight to make their food. Concrete absorbs sunlight during the day, then releases it as heat during the night. How are humans changing the environment by cutting down trees to build cities?
A) They are making the temperature colder by replacing trees with concrete.
B) They are making the temperature warmer by replacing trees with concrete.
C) They are making the seasons in the environment longer by replacing trees with concrete.
D) They are making the seasons in the environment shorter by replacing trees with concrete.
B) They are making the temperature warmer by replacing trees with concrete.
A paleontologist was able to find a crushed ammonite fossil in South Texas. The organism represented in this fossil —
A) lived in an environment that required a hard exterior for protection.
B) was killed in an episode of mass extinction in a stable environment.
C) had an internal skeleton that was used to maintain the organism's structure.
D) must be genetically identical to other organisms found in the same location.
A) lived in an environment that required a hard exterior for protection.
The alligator in this environment is —
A) a biotic factor that needs biotic oxygen to live.
B) an abiotic factor that feeds on other abiotic factors.
C) a biotic factor that swims in abiotic water.
D) an abiotic factor that interacts with the abiotic marsh grass.
C) a biotic factor that swims in abiotic water.
Which of the following are two biotic factors that will interact in this environment?
A) frog and lily pad
B) shark and sand
C) air and water
D) bird and rock
A) frog and lily pad
The shark in the water of the Arctic environment is —
a biotic factor that feeds on other biotic factors.
A) an abiotic factor that swims in biotic ocean water.
B) a biotic factor that needs the cool temperature of the biotic Arctic water to survive.
C) an abiotic factor the breathes biotic dissolved oxygen that passes into the shark's gills.
D) a biotic factor that feeds on other biotic factors.
D) a biotic factor that feeds on other biotic factors.
A group of scientists was studying the animals that live near Diamond Lake. Their records showed that there were 1,000 frogs living near the lake when they started the study. Three years later, there were 400 frogs in the lake. Which of the following is NOT a possible reason for what happened?
A) Humans began using the lake and there was more pollution in the water.
B) The area received very little rain, and the lake started drying up.
C) The heron, which feed on frogs, moved to a new environment.
D) Pesticides were used to rid the area of insects, which frogs feed on.
C) The heron, which feed on frogs, moved to a new environment.
Which one of the following is NOT a reason why studying fossils is important?
A) They show evidence of the diversity of organisms.
B) They present detailed traits of distant ancestors.
C) They are used to determine characteristics of an ancient environment.
D) They provide information about the genes of species that are now extinct.
D) They provide information about the genes of species that are now extinct.
The lionfish is native to the Indian Ocean, and it is a popular tank fish in the United States. Just 30 years ago, lionfish were rarely spotted off the Florida coast. Today, the waters around Florida are full of lionfish.
How will the lionfish most likely change Florida's ocean environment?
A) They will make the number of small fish off the coast of Florida go up.
B) They will make native animals get sick by putting toxins in the water.
C) They will block the sunlight from reaching native plants.
D) They will use food needed by native animals.
D) They will use food needed by native animals.