Week 17 Flashcards
Select all biotic factors that may be harmful to a plant.
Bacteria
Animals
Other plants
Fungi
A nonnative species can become invasive when it has no natural _____
in its new environment.
Blank 1: predators
What is the first line of plant defense against predators?
Dermal tissue
Select all physical defenses used by plants to defend against pathogens.
Trichomes on leaves
Wax coatings on stems
Bark on trees
Thorns are an example of
a physical defense mechanism.
Biotic factors that may be harmful to plants include ______.
bacteria and fungi
Plants often protect themselves against herbivores using secondary ______.
metabolites
A nonnative invasive species can become problematic due to
its lack of natural predators.
Caffeine and nicotine are both examples of ______.
alkaloids
The first line of defense protecting plants from their predators is the ______
tissue system.
Blank 1: dermal
Select all substances that act as a first line of defense and help to protect plants from water loss and attack.
Cutin
Suberin
Wax
Choose all that act as physical barriers which protect plants against invaders.
Thorns
Bark
Trichomes
Secondary metabolites can deter herbivores by (choose all that apply)
negatively affecting cellular processes in the herbivore.
binding to and inactivating proteins.
having a strong repellent odor.
What is one type of chemical defense used by plants against herbivores?
Secondary metabolites
Select all alkaloids.
Caffeine
Nicotine
Morphine
What is the first line of plant defense against predators?
Dermal tissue
The cellular effects of tannins include
inactivation of proteins.
Select all physical defenses used by plants to defend against pathogens.
Bark on trees
Trichomes on leaves
Wax coatings on stems
Many plants produce toxins that could kill any eukaryotic cell, including the plant’s cells. The plant is protected because the toxic chemicals are kept inside a ______-bound structure.
Blank 1: membrane
Match secondary metabolites to their mechanism of action.
Alkaloids
Tannins
Oils
Cyanogenic glycosides
Alkaloids- Affect cellular processes, causing, for example, over-stimulation, or sedation
Tannins- Bind to and inactivate proteins
Oils- Repel insects with their scent
Cyanogenic glycosides
-Toxic to insects when metabolized in their guts.