Seed coat formation
Nourishment of the embryo
Direction of the growth of the pollen tube
Cutinized aerial surfaces
Flowers and fruits
True leaves and roots
Both are produce as secondary growth by vascular cambium.
Both have companion cells.
Both are found in bryophytes.
Both conduct glucose in the plant.
Both actively move fluids up and down stems.
Capillarity in the phloem
Active transport in the xylem
Considered living cells
Involved in transporting water and ions
Found in vascular plants
Found in the outer cortex of the stem
Found in the center of the stem
A haploid sporophyte
A diploid sporophyte
A diploid gametophyte
Haploid megaspores and microspores
Is made mostly of meristematic tissue used for the storage of food
Can be stimulated to germinate by an application of abscisic acid
Forms from the union of a microspore mother cell with a megaspore mother cell
Shows the presence of a well-developed coleoptile
Contains a first-foliage plumule formed at the apical meristem
Length of the light period
Length of the dark period
Relative amount of blue light available during the light period
Intensity of light during the light period
Air temperature during the dark period
The cohesion of water
The influence of gibberellin on cell expansion
The evaporation of water from the leaves
C leaves typically contain more water than do T leaves
Both C and T leaves show declines in water content as the summer goes on.
T leaves show greater declines in water content than do C leaves.
Defoliation by gypsy moths has no effect on the water content of next year’s leaves.
Differences in the water content between C and T leaves grow greater as the summer goes on.
Transpiration and cohesion
Root and stem pressure
Process of pollination and fertilization occur in the soil
Pollen tubes deliver the sperm to the eggs
Eggs develop without sperm by parthenogenesis
Eggs have a structure that aids in their dispersal by wind
Sperm contain large amounts of cytoplasm
Initiation of the breakdown of the food reserve
Initiation of cell division in the root meristem
Emergence of the root
Expansion and greening of the first true foliage leaves
Imbibition of water by the see
Nourishes the seeds within the fruit on ripening
Aids in seed dispersal
Inhibits seed germination until favorable environmental conditions occur
Provides an energy source for the plant egg cell prior to fertilization
Chlorophyll synthesis on the side of the stem near the light source
Cell division on the side of the stem near the light source
Cell division on the side of the stem away from the light source
Cell elongation on the side of the stem near the light source
Cell elongation on the side of the stem away from the light source
The plant seeks light in order to maximize photosynthesis
Nervelike impulses stimulate contractile cells on the lighted side of the stem.
Cells on the dark side of the stem elongate more than those on the lighted side.
The plant grows into an open area where its leaves will not be shaded by competing plants.
The greater energy supply on the lighted side of the stem stimulates metabolism and growth on that side.
Protect the meristem as the root tip grows through the abrasive soil particles
Allow for expansion of the vascular cambium as the root grows laterally
Control the movement of materials into the vascular cylinder of the root
Initiate lateral root growth
Serve as a site for the storage of excess sugars in the form of starch
A difference in osmotic potential between the source and the sink
Transpiration of water through the stomates
Adhesion of water to vessel elements
Passive transport by the pith
The force of transpirational pull
The number of companion cells in the phloem
Active transport by the sieve-tube members
Active transport by tracheid and vessel cells