LessonLesson Review

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

• Im

age

Cred

its: (

br) ©

Les

Picc

olo/

Flic

kr/G

etty

Imag

es

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

• Im

age

Cred

its: (

cl) ©

Gaer

tner

/Ala

my

VocabularyDraw a line to connect the following terms to their definitions.

1 abiotic2 biotic3 consumer4 decomposer5 ecosystem6 parasitism7 producer

A eats other organismsB contains living and

nonliving things interacting together

C nonliving parts of an ecosystem

D relationship in which one organism is helped and the other is harmed

E makes its own foodF living parts of an ecosystemG breaks down the remains of

organic matter

Key ConceptsFill in the table below.

Example

Level of Ecosystem

Organization

8 Identify A colony of ants building an ant hill

9 Identify An ant foraging for food

10 Identify Ants, birds, snakes, rabbits, and mice living in a meadow

11 Compare How are predator/prey and parasite/host relationships similar?

Critical ThinkingUse the oak tree–earthworm–robin food chain to answer the following questions.

12 Apply Categorize each organism as a producer, consumer, or decomposer.

13 Predict What might happen if the population of producers in this ecosystem died off? Explain.

14 Apply What abiotic factors would a parasitic strangler fig and its host tree compete for?

15 Apply A cat and dog live in the same house. Is their habitat or niche the same? Explain.

Lesson Review Answers 1. C

2. F

3. A

4. G

5. B

6. D

7. E

8. population

9. individual

10. community

11. In both predator/prey and parasite/host relationships, one organism benefits while the other is harmed.

12. The oak tree is a producer; the earth-worm is a decomposer; the robin is a consumer.

13. If the producers died, populations of decomposers such as the earthworm might increase to process the dead material. That could cause robin popula-tions to increase.

14. The roots of each plant would compete for water and soil nutrients. The plants would also compete with each other for sunlight.

15. Their habitat is the same, because a habitat is where an organism lives. Their niches are different, because they have different roles in a house.

507

1

Lesson 1 Ecosystem Ecology

DO NOT EDIT--Changes must be made through “File info”LONumber=LC182112; CorrectionKey=A

8_CTXESE025547_U0 L01A.indd 507 12/10/12 3:34 M

Name: Date: Class: ©

Hou

ghto

n M

ifflin

Har

cour

t Pub

lishi

ng C

ompa

ny •

Imag

e Cr

edits

: (br

) ©Le

s Pi

ccol

o/Fl

ickr

/Get

ty Im

ages

143143Lesson 1 Ecosystem Ecology

DO NOT EDIT--Changes must be made through “File info” LONumber=000000; CorrectionKey=A