Download Plant Parts and their Functions

Objective 13.02
• What are the biological terms (and
their definitions) used to describe
plants?
Life Cycles of Plants
• Annual-a plant that completes its
life cycle in one year
• Biennial-a plant that completes its
life cycle in two years
• Perennial-a plant that lives more
than two years
Leaf Retention
• Deciduous-loses leaves during the
dormant season
• Evergreen-keeps leaves and
remains green year-round
Plant Hormones
• Several types of hormones are
used to help plants work more
efficiently.
– Inhibitors
– cytokinins
– gibberellias
– auxins
Inhibitors
• Inhibitors hasten fruit ripening,
retain seed germination and stem
elongation.
Cytokinins
• Hormones that work with auxins to
stimulate cell division.
Gibberellias
• Hormones that stimulate cell
elongation, premature flowering,
and breaking of dormancy.
Auxins
• Hormones that speed plant growth
by stimulating cell enlargement
Moisture in Plants
• Turgid-plant is swollen or filled
with moisture
• Wilted-plant is limp because it
does not have enough moisture
• What are the biological terms (and
their definitions) used to describe
plants?