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Food Webs (Grade 4)

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Food Webs

Which of the following is composed of several food chains in an ecosystem that intersect and that depend on one another?
  1. niche
  2. feeding level
  3. energy pyramid
  4. food web
In an ecosystem, how are food webs and food chains different?
  1. Food webs begin with animals and food chains begin with plants.
  2. Food webs rarely begin with plants and food chains begin with animals.
  3. Food webs show the relationship between many different food chains in a single ecosystem.
  4. Food chains show the relationship between many different food webs in a single ecosystem.
Some scientists think that a food web with many connections is more stable than one with few connections.
  1. True
  2. False
Which of the following organisms can be found at the first, lowest trophic level?
  1. herbivores
  2. carnivores
  3. heterotrophs
  4. autotrophs
An organism which lives on or in another organism and derives it nutrition from that organism would be a                .
  1. autotroph
  2. heterotroph
  3. parasite
  4. saprophyte
Any organism which must obtain its food from a source outside itself is a                .
  1. autotroph
  2. heterotroph
  3. parasite
  4. saprophyte
Which type of organism breaks down the cells of dead organisms?
  1. producer
  2. consumer
  3. decomposer
  4. omnivore
Which is a consumer?
  1. cow
  2. grass
  3. mushroom
  4. peach tree
Which is an example of a decomposer?
  1. cacti
  2. flowers
  3. grass
  4. mushrooms
Which choice below correctly describes how energy is passed among the four organisms?
  1. consumer, consumer, decomposer, producer
  2. decomposer, consumer, consumer, producer
  3. producer, consumer, consumer, decomposer
  4. consumer, decomposer, producer, consumer
Deer and zebra feed on grasses and other plants. Leopards and lions feed on deer and zebra. Which of these is the role of deer and zebra in this ecosystem?
  1. Producers
  2. Carnivores
  3. Decomposers
  4. Consumers
In a food chain, there are decomposers, consumers, and producers. In a food web that has grass, hawks, grasshoppers, and snakes, the third level consumer is which of the following?
  1. Grass
  2. Snake
  3. Hawk
  4. Grasshopper
Everyone in our class eats chicken, pigs, cows, fish, turkey, and all sorts of other animals. Everyone in our class also eats plants such as salad and spinach. We also eat fruits and veggies such as apples, bananas, grapes, kiwi, potatoes, carrots, corn, and many more. The best description for humans is which of the following?
  1. herbivore
  2. decomposer
  3. omnivore
  4. carnivore
A giraffe's ecosystem is found throughout Africa. Giraffes eat leaves off of tall trees. They may eat veggies or fruits on occasion. Giraffes will never hunt or eat other animals. Which of the following best describes giraffes?
  1. herbivore
  2. decomposer
  3. omnivore
  4. carnivore
A lion does not eat veggies or fruit. They do not eat plants or grass. They eat only meat. This kind of animal is called a what?
  1. herbivore
  2. decomposer
  3. omnivore
  4. carnivore
Which of the following lists the organisms correctly from lowest trophic level to highest?
  1. Hawk, weasel, chipmunk, seeds
  2. Chipmunk, weasel, seeds, hawk
  3. Seeds, chipmunk, weasel, hawk
  4. Seeds, chipmunk, hawk, weasel
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