The blood also carries _________ which are fragments of cells.
Blood
Platelets
Plasma
None
Guttation is:
movement of soluble organic materials through plants
movement of water through the apoplast.
evidence of root pressure.
negative pressure created by transpiration.
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
Specific ions are acquired by root hairs by the process of
simple diffusion
osmosis
facilitated diffusion
The reason that a column of water in a tall tree does not sink because of its weight is
the formation of hydrogen bonds with the plants vessels
bubbles form that are too large to be transported
the presence of strong ion concentrations near the top of the tree
__________ is a waste product from the liver.
Thyroxine
Ammonia
Urea
Stomata close when the guard cells:
gain chloride ions.
become turgid.
The smallest amount of pressure needed to stop fluid from moving by osmosis is referred to as the
turgor pressure
water potential
solute potential
energy potential
Apparently _______________ is the source of energy for keeping stomata open.
photosynthesis
transpiration
ion transfer
sodium pump
The combination of pressure potential and solute potential is
transpiration potential
stem potential