TejaTscharntke’s studies of the food web associated with Phragmites reeds revealedthat:a.only a single parasitoid species can persist exploiting a single speciesof herbivore.b.only a single herbivore species can persist attacking a single speciesof plant.c.predation by birds actually protects herbivores, because the birds feedon parasitoid-infested herbivore galls but not uninfested galls.d.within local food webs, all interactions tend to be of roughly the samestrength.e.recognizing variation in interaction strength can greatly simplify thedepiction of a food web.
TejaTscharntke’s studies of the food web associated with Phragmites reeds revealedthat:a.only a single parasitoid species can persist exploiting a single speciesof herbivore.b.only a single herbivore species can persist attacking a single speciesof plant.c.predation by birds actually protects herbivores, because the birds feedon parasitoid-infested herbivore galls but not uninfested galls.d.within local food webs, all interactions tend to be of roughly the samestrength.e.recognizing variation in interaction strength can greatly simplify thedepiction of a food web.
Biology (MindTap Course List)
11th Edition
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Chapter53: Introduction To Ecology: Population Ecology
Section: Chapter Questions
Problem 7TYU: Giant bamboos live many years without reproducing, then send up a huge flowering stalk and die...
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Question
Teja
Tscharntke’s studies of the food web associated with Phragmites reeds revealed
that:
a.
only a single parasitoid species can persist exploiting a single species
of herbivore.
b.
only a single herbivore species can persist attacking a single species
of plant.
c.
predation by birds actually protects herbivores, because the birds feed
on parasitoid-infested herbivore galls but not uninfested galls.
d.
within local food webs, all interactions tend to be of roughly the same
strength.
e.
recognizing variation in interaction strength can greatly simplify the
depiction of a food web.
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