1.Populations of Organisms That Live in and Interact in a Particular Area Form A(N) ______

Name______Class______

STATION 1 Use the terms from the following list to complete the sentences below. Each term may be used only once. Some terms may not be used at all.

communitypreybiosphereecologyconsumer

predatorsymbiosiscoevolution carnivore commensalism

1.Populations of organisms that live in and interact in a particular area form a(n) ______.

2.The study of interactions between living things and their environment is ______.

3.A spider that feeds on live insects is an example of a(n) .______.

4.The part of Earth where life exists is the ______.

5. Herbivores, carnivores, and omnivores are all______.

6. When the close interaction between two organisms results in long-term changes in both organisms,______has taken place

7. Animals that eat a variety of meats, fruits, and vegetables are______.

STATION 2 Write the letter of the correct answer in the space provide.

_____8.The plants a ladybug lives on, the aphids the ladybug eats, and the birds that would eat the ladybug are all

a.biotic elements of an ecosystem. b.predators.

c.producers. d.abiotic elements of an ecosystem.

_____9.A scientist studying the way egrets, herons, and crabs interact, who is not interested in abiotic factors such as the rocks, water, and temperature, is studying what level of environmental organization?

a.population b. ecosystem c.communityd.biosphere

______10. Certain ants take asweet liquid called honeydew from tiny insects called aphids. In exchange for the honeydew, the ants protect the aphids from predators. What kind of relationship is this?

1. Commensalism b. Predation c. Mutualismd. Parasitism

_____ 11. In a food web, arrows point in just one direction because they show

a. which animal is bigger. b. which animals are related.

c. how energy goes to the animal that is eating. d. how energy goes to the animal that is eaten.

_____ 12. After one species disappears, the other species in the ecosystem

a.benefit. b. are thrown out of balance.

c.die. d. are unaffected.

______13. . Limiting factors determine an area’s carrying capacity because

a.the number of animals is limited. b.ecosystems are small.

c.animals need resources to survive. d.the number of animals is unlimited.

_____ 14. Two members of the same species fight over who gets a certain food. Members of different species try to take over a certain nesting area. These are both examples of

a.community. b. competition. c.mutualism.d. commensalism.

STATION 3 Compare and Contrast the following questions.

11.What is the difference between a population and an ecosystem? Give an example of each.

12.Explain the difference between a food chain and a food web.

13. Explain the difference between a limiting factor and carrying capacity

STATION 4concept mapping

16.Use the following terms to complete the concept map below.

carnivoresenergyherbivoresomnivoresproducers

STATION 5Use the diagram to answer questions 17- 20. Write the letter of the answer in the space provided.

_____ 17. Three organisms on the food web have arrows pointing away from them and no arrows pointing toward them. They are

a.omnivores. b. decomposers. c.herbivores.d.producers.

_____ 18. Three organisms on the food web have arrows pointing toward them but no arrows pointing away from them. This is because

a.they make their own food. c.nothing shown eats them.

b.they give energy to others. d.they need no energy.

_____ 19. The arrows on the food web show that

a. prairie dogs eat grass. b. squirrels eat grass. c. deer eat prairie dogs .d. squirrels eat coyotes.

_____ 20. What does the arrow between the grasshopper and the coyote represent?

a. energy flowing from producers to consumersb. energy flowing from consumers to producers

c. energy flowing from the coyote to the grasshopper d. energy flowing from the grasshopper to the coyote

Station 6 Use the diagram below to answer question 21

______21. Which organism would best fit in the empty spot in the food web diagram shown above?

A.a prairie dog B. a turkey vulture C. a fox D. a blue jay

______22. If scientists are studying the egrets, herons, marsh crabs, and cordgrass, but not the water or rocks in a salt marsh, what level of organizationwould they be studying?

a.individual organism b. population c.community d.ecosystem

______23. The source of all energy in a food web (land or aquatic) is:

1. producer b. herbivore c. sunlight d. photosynthesis

STATION 7: Compare the three types of Symbiotic Relationships

STATION 8 In the space provided, indicate whether each of the following symbiotic relationships is an example of mutualism, commensalism, or parasitism.

24.Clownfish live among the venomous tentacles of a sea anemone. They are protected from predators, and they keep the sea anemone clean.______

25.Barnacles attach themselves to the shells of crabs. The barnacles receive a home. The crab is unaffected.

______

26.Dutch elm disease is caused by a fungus that grows and feeds on elm trees. The fungus destroys the trees.

______

27.Small mites live on your skin, eating dead skin cells. You don’t even notice.______.

2 8.Tapeworms live in the intestines of cats and absorb nutrients from the food the cats eat. The cats do not get enough nutrients. ______.

STATION 8 Complete the following questions on a separate sheet of paper

29. What is camouflage? How does it help a predator? How does it help prey

30. Define abiotic factor and give 3 examples

31. Describe the 4 types of consumers and give an example of each

32. List the levels of organization in the environment?

33. Which is the highest level of organization in the environment? Which is the lowest?

34. What is competition? Explain the two types of competition

Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.

Holt Science and Technology1Interactions of Living Things