plants part 2 Flashcards
Water and ______ minerals move from
___ into ___ tissues (epidermis, cortex)
dissolved soil root
Water and minerals move upward, from
____xylem to___ xylem to ___ xylem
root stem leaf
Water entering leaf exits ___ ___ and
passes into _______
leaf veins atmosphere
Tension Cohesion in Transpiration causes evaporative ___ that causes ____ at top of plant, a result of water _____ ______
pull, tension ,potential gradient
Tension–Cohesion Column of water pulled up through the
plant remains ______ due______ and ______ properties of
water
unbroken, cohesive and adhesive
According to the tension–cohesion model,_________
pulls water up through the ____ as water evaporates from leaves by ________
transpiration, stem, transpiration
What Explains rise of water in smaller plants
particularly when soil is wet
Root Pressure
_____ ______Pushes water up through ____ water moves from soil into roots due to _____ ______ of mineral ions from soil
RootPressure,xylem,active absorption
Sugar Translocation
Dissolved sugar is translocated upward or downward in phloem
Sugar Translocation is from area of ___ to a ___
excess sugar (usually a leaf ,to a sink (area of storage or sugar use: roots,a pical meristems, fruits, seeds)
_____ predominant sugar
translocated in phloem
Sucrose
Taproot System
Has _ ____ root
from which many lateral _____ _____
one main, roots extend
dicot*
Fibrous Root System
Has many adventitious roots of ____ size
same
monocot *
Root cap are/do (3)
protective layer that covers the root tip
covers delicate root apical meristem
may orient root so that it grows downward
Root hairs are/ do
short-lived extensions of epidermal cells
help absorb water and dissolved minerals
The _______ absorbs mineral ions
from the soil solution by an active process requiring _____
endodermis, energy
Mycorrhizae
Mutually beneficial associations between
roots and soil fungi
Root Nodules House rhizobia which
(nitrogen-fixing bacteria)
Which type of organism likely
existed first on planet Earth?
Chemoheterotrophs
Chloroplasts
Enclosed by a
double membrane
Photosynthetic Pigments In thylakoid membranes are
chlorophyll a
chlorophyll b
Carotenoids
_____ excite photosynthetic pigments and move to ______ ______ compounds
Photons,electron acceptor
basic process Light-dependent reactions
light energizes electrons that generate ATP
and NADPH
basic process Carbon fixation reactions
use energy of ATP and NADPH to form
carbohydrate
Noncyclic Electron Transport in light ______ form ____ ____
-dependent reactions
form ATP and NADPH
Carbon fixation (Calvin Cycle) reactions incorporate
CO2
into organic molecules