W. W. Norton Home | Help | Contact Us | Site map | Site Credits

Colorblind Mode: On • Off

Discover Biology, 4th Full Edition | StudySpace

Biology in the News

Unit 1
- 1
- 2
- 3
- Interlude A
  - Organize
    - Study Plan
    - Flash Cards
  - Learn
  - Connect
    - Biology in the News
Unit 2
- 4
- 5
- 6
- 7
- 8
- 9
- Interlude B
  - Organize
    - Study Plan
    - Flash Cards
  - Learn
  - Connect
    - Biology in the News
Unit 3
- 10
- 11
- 12
- 13
- 14
- 15
- Interlude C
  - Organize
    - Study Plan
    - Flash Cards
  - Learn
  - Connect
    - Biology in the News
Unit 4
- 16
- 17
- 18
- 19
- Interlude D
  - Organize
    - Study Plan
    - Flash Cards
  - Learn
  - Connect
    - Biology in the News
Unit 5
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- Interlude E
  - Organize
    - Study Plan
    - Flash Cards
  - Learn
  - Connect
    - Biology in the News
Unit 6
- 31
- 32
- Interlude F
  - Organize
    - Study Plan
    - Flash Cards
  - Learn
  - Connect
    - Biology in the News
Unit 7
- 33
- 34
- 35
- 36
- 37
- 38
- Interlude G
  - Organize
    - Study Plan
    - Flash Cards
  - Learn
  - Connect
    - Biology in the News

Chapter 35

Chapter 35: Interactions among Organisms

What's News Quizzes

Please read this article, Africa's Biggest Mammals Key to Ant-plant Teamwork, and answer the following questions.

1. What is the impact of big mammals on the mutualistic relationship of the ants and Acacia trees?

a) The two mutualistic species work together to avoid big mammals.
b) The Acacias use ants to protect them from the mammals but avoid the ants if the mammals are absent.
c) The Acacias and ants work together best when the mammals are absent.
d) The Acacias, ants, and mammals have no influence on each other.

2. How do the ants benefit from their partners, the Acacia trees?

a) Swollen thorns on the tree provide nests for the ants.
b) The ants attack mammals that eat the trees.
c) The trees attack the mammals that eat the ants.
d) There is no benefit for the ants.

3. How do the trees benefit from their partners, the ants?

a) The ants build nests into thorny structures that protect them from predators.
b) The ants attack mammals that eat the trees.
c) The trees attack the mammals that eat the ants.
d) There is no benefit for the trees.

4. Why were Acacia trees that were fenced off and protected from mammalian predators more sickly than those growing in the wild?

Submit to Gradebook:

First Name:
Last Name:
Your Email Address:
Your Professor's Email Address:

Print This Page

The Norton Gradebook

Instructors and students now have an easy way to track online quiz scores with the Norton Gradebook.

Go to the Norton Gradebook

Norton Ebooks

The ebook version Discover Biology, 4 offers the full content of the print version at half the price.

About W. W. Norton

W. W. Norton & Company has been independent since its founding in 1923, when William Warder Norton and Margaret D. Norton first published lectures delivered at the People's Institute, the adult education division of New York City's Cooper Union. The Nortons soon expanded their program beyond the Institute, publishing books by celebrated academics from America and abroad. By mid-century, the two major pillars of Norton's publishing program—trade books and college texts—were firmly established. In the 1950s, the Norton family transferred control of the company to its employees, and today—with a staff of 400 and a comparable number of trade, college, and professional titles published each year—W. W. Norton & Company stands as the largest and oldest publishing house owned wholly by its employees.

This site and the materials contained herein ©2012 W.W. Norton and Company, Inc. unless otherwise stated., Inc. unless otherwise stated. All rights reserved.