The blood also carries _________ which are fragments of cells.
Blood
Platelets
Plasma
None
Which of the following is a correct list of contents of the organic material in soil?
humus,roots and decomposed material
roots and small animals
minerals, small animals, and roots
Guttation is:
movement of soluble organic materials through plants
movement of water through the apoplast.
evidence of root pressure.
negative pressure created by transpiration.
The fluid which flows in blood vessels.
None of these
In the absence of transpiration water moves into and up the xylem because of
root pressure
turgor pressure
evaporation
high soil mineral concentration
Water potential is the
combination of turgor pressure and pressure potential
difference between pressure potential and osmotic potential
combination of pressure potential and solute potential
product of pressure potential and osmotic potential
A common adaptation of plants to an aquatic existence is the formation of
chlorenchyma
aerenchyma
collenchyma
sclerenchyma
In most species, as K+ moves in or out of the guard cell to regulate the stomatal opening, there is movement in the opposite direction by
Na+
OH-
Cl-
Apparently _______________ is the source of energy for keeping stomata open.
photosynthesis
transpiration
ion transfer
sodium pump
Specific ions are acquired by root hairs by the process of
simple diffusion
osmosis
facilitated diffusion
