Download Slide 1

Do Now:
 Pick
up the paper from the front table
and complete the Bellringer portion at the
top.
What you need to know about
Kingdom Plantae:
 In
addition to these key characteristics,
the EOCT will also focus on plant
hormones and tropisms.
 We will explore these two things today!
What is a tropism?
 Tropisms
are directional movement
responses that occur in response to a
directional stimulus.
There are 3 main types of
tropisms:
 Gravitropism
 Phototropism
 Thigmotropism
Watch the videos and then define
gravitropism & determine why it’s
important to plants
 http://plantsinmotion.bio.indiana.edu/plantmotion/
movements/tropism/tropisms.html
Watch the videos and then define
phototropism & determine why it’s
important to plants
 http://plantsinmotion.bio.indiana.edu/plantmotion/
movements/tropism/tropisms.html
There is one main plant
hormone responsible for
phototropism:
A
hormone is any chemical produced in
one part of the body that has a target
elsewhere in the body.
 Auxin is a plant hormone produced in the
stem tip that promotes cell elongation.
Auxin moves to the darker side of the
plant, causing the cells there to grow
larger than corresponding cells on the
lighter side of the plant.
Watch the videos and then
define thigmotropism
 http://www.youtube.com/watch?v=m2xKjA69jNM
 http://www.youtube.com/watch?v=_SIJ4ov_FxA
 So
Ms. Brannenwhat about Venus
fly traps and
sensitive plants?
 What kind of
tropism(s) do they
display
… actually display nastic
movements (not tropisms)
 Nastic
movements are plant movements
that occur in response to environmental
stimuli but unlike tropic movements, the
direction of the response is not
dependent on the direction of the
stimulus.
Venus fly trap & sensitive
plants…
 http://www.youtube.com/watch?v=9sgg
QQuBU40&feature=related
 http://www.youtube.com/watch?v=BLTc
VNyOhUc
Animal behavior
 http://www.youtube.com/watch?v=EyyD
q19Mi3A&list=PL3EED4C1D684D3ADF