Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 39 - Plant Defense Responses - Review Questions - Synthesize: 2

Answer

Parasitoid wasps are limited in their effectiveness when there are not enough of their prey for them to maintain a population large enough to protect plants. Also, they are not as effective when several pests, not all of which are the wasps' prey, are attacking the same plant.

Work Step by Step

Parasitoid wasps are very specific protectors of plants, so imagine how this specificity could be a problem. A parallel is seen in an earlier chapter on pollinators and specificity.
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