Exam 38: Plant Responses to Environmental Challenges

Which character is not an adaptation of xerophytes?

Which evidence best supports the hypothesis that the presence of toxic latex in leaves deters insects from feeding on a plant?

In soybean plants that have been inoculated with a pathogenic virus, which would not be evidence of a hypersensitive response?

Which plants are adapted to drought stress?

Plants produce antibiotics called _______ within hours of infection by fungi or bacteria.

Aerenchyma is most common in plants that are

Phytoalexins

In lab experiments, tobacco plants having less nicotine in their leaves experienced more damage from tobacco hornworms.This supports a role for nicotine in

Which pairing of secondary plant products with a role those products typically play is not correct?

When cells accumulate the amino acid _______, their water potential becomes more negative.

To strengthen cell walls when pathogens attack, plants characteristically add

Plants concentrate the harmless amino acid proline in their cells to

The chemical artemisinin, which is extracted from sweet wormwood, is effective against the malarial parasite.Because this chemical is produced in the plant for its own defense, it is most likely a(n)

_______ are root extensions that grow up out of the water, under which the rest of the roots are submerged.

Which adaptation is not useful for survival in cold environments?

Which statement best explains how a plant is able to grow well in aluminum-rich soil?

A plant sample that is found to contain high levels of proline most likely derived from a plant adapted to a _______ habitat.

Substances that are not used for basic cellular metabolism, but rather for special functions such as inhibiting other organisms, are called _______ metabolites.

A newly bred plant that takes up 100 times the normal amount of cadmium from soil is most likely to be useful for

_______ are volatile neurotoxins from the terpene group used by plants for defense.