The flashcards below were created by user
Morgan.liberatore
on FreezingBlue Flashcards.
-
water and minerals can move from the soil to the root xylem. which statement correctly describes apoplastic path?
intercellular spaces and cell wall regions
-
what does abscisic acid do?
maintains seed dormancy and winter dormancy; closes stomata
-
what do auxins do?
promote stem elongation, adventitious root initiation, and fruit growth; inhibit axillary bud outgrowth and leaf abscission
-
what do brassinosteroids do?
promote stem and pollen tube elongation; promote vascular tissue differentiation
-
what do cytokinins do?
inhibit leaf senescence; promote cell division and axillary bud outgrowth affect root growth
-
what does ethylene do?
promotes fruit ripening and leaf abscission; inhibits stem elongation and gravitropism
-
what do gibberellins do?
promote seed germination, stem growth, and fruit development; break winter dormancy; mobilize nutrient reserves in grass seeds
-
how do shoots and roots show opposite responses to gravity?
- shoots grow away from it
- roots grow towards it
-
how does auxin promote cell growth in stem growth?
auxin moves towards lower side and stimulates cell growth on the underside bending upwards
-
how does a plant know when to flower?
depending on the species, a plant is induced to flower when a particular combination of day-length and night-length in a 24-hour cycle is obtained
|
|