Plantae Flashcards
plants have helped the atmosphere develop to contain –% oxygen, which is vital to aerobic organisms
21
plants also make use of the – that is produced by other living organisms
CO2
chlorophyll, which is responsible for reflecting green light and absorbing wavelengths of red and blue light which is around
660 and 430 nm
roots anchor plants and –
absorb water and nutrients
– dramatically increase the absorption surface area of plant’s roots
root hairs
carries water and minerals from the roots to the leaves
xylem
– carries glucose from the leaves where it is synthesized
phloem
leaves large – allows for more direct contact with sunlight and for absorption of CO2
surface area
gas exchange of CO2 input and O2 output as well as transpiration occurs through the –
stomata
stomatal opening is regulated by –
guard cells
stomata will open when the guard cells that flank it become – through the osmosis of water into the cells
turgid
guard cells become turgid when there’s a build up of – in the interior of the guard cells
K+
K+ moves into guard cells through specific membrane channels when – are pumped out of the cell, thereby making the exterior of the cell more positive
H+
with the increase of K+ inside the cell, water will enter by osmosis, causing guard cells to become –
turgid
stomata will close when the K+ is moved out of the cell, which will cause water to leave as well as make the guard cells –
flaccid
