Compare growth due to
apical and lateral meristems in dicots
Growth in plants is brought about initially with cell
division at the apical and lateral meristem.
Observation of shoot/root tips with light microscope reveals
regions with cell in the various stages of mitosis. (Cell division,
reproduction)
This growth process adds length to the stem or root
Secondary growth added by the Lateral meristem has two types
1.
Vascular cambium that produces secondary xylem
and phloem
2.
Cork cambium produces some of the bark layer of
the stem
Explain the role of Auxin
in phototropism
If light is scares because an area is crowded with plants or
for some other reason, a plant needs to grow towards the light so it can get as
much of it as possible.
Auxins are plant hormones that cause positive phototropism
of the plant shoot and seedings
Explain how water us carried by transpiration stream,
including the structure if xylem vessels, traspirational pull, cohesion,
adhesion and evaporation
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