🍀 Flashcards
Plants need to build amino acids?
ammonia(NH3)
plants able to convert gaseous nitrogen to ammonium, nitrates and nitrates themselves?
nope the have to find other ways
how do you carnivores plants obtain nitrogen?
directly from other organisms
how do parasitic plants obtain nitrogen?
they tap into vascular tissue of host plant for nutrients
what is an example of plant defense poison and invader?
sara longwing butterfly example
phytoestrogens
produce estrogen
taxol
help with breast cancer
quinine
produce chemical that would lower effect of malaria
what are secondary metabolites?
have tremendous pharmaceuticals potential for humans
What are some plants that are covered with “bodyguards”?
acacia tress, parasitoid wasps, caterpillars and leaves
wound response (caterpillars)!?
the wasp would come and attack the caterpillar because the leaf would release a signal letting them know that the caterpillar was there
what is a wound response?
wound triggers the release of systemin Travels throughout the plant
what is phototropism?
response involves bending of growing stems towards light sources
what is gravitropism?
The response of a plant to the earths gravitational field
what main hormone is involved in phototropism?
auxin
- the auxin does to top of stem
are the three other types of tropism‘s?
thigmotropism- contacts with an object
chemotropism- chemicals
traumatropism- wounding
Does it mean when a stem turns against the force of gravity?
Negative Gravitropism
what does it mean when the root ultimately grow downwards?
positive Gravitropism
what is dormancy
ability to cease growth and enter into a dormant state provides a survival advantage
Where does auxin promote activity?
vascular cambium and vascular tissue
what is ethylene?
Is produced when auxin is transferred down from the apical meristem of the stem
what production increases rapidly when a plant is exposed to toxic chemicals or temperature extremes
ethylene
