Wednesday May 11, 2016
• Identify the parts of the flower.
Pollen
Ovule
Style
Stigma
Anther
Ovary
Filament
Homework
• Chap. 5, Sect. 3: Plant Responses to
the Environment
(Pg. 118 to 121)
• Read section and complete questions
on socrative.com
– PELOQUINSCIENCE
• Please bring a phone/camera to class
tomorrow!
Homework Check
• Take out your worksheet from last
night
• Compare answers with your table
Learning Target
• I can…
– Observe and identify different types of
tropism
What do you think is meant by “limiting factor”?
What gas could
be considered a
limiting factor for
humans but NOT
for plants?
What are the different things that plants need in order to
survive…without which their growth would be limited?
What do you notice about all of
the sunflowers in this field?
Plant Tropisms
Often, we don’t think of plants as being real
organisms because they don’t think or move around.
Watch the videos and
fill out the definitions
on the top of page 108
in your journal
While they may
not move
consciously
(or very quickly)
plants do
respond to
changes in the
environment.
Plant Tropisms
• Growth in response to a stimulus
• Stimuli that effect plant growth:
–
–
–
–
Light (phototropism)
Gravity (gravitropism)
Nutrients
Water
• Positive tropism  grows towards
stimulus
• Negative tropism  grows away from
stimulus
Have you
ever seen a
tree growing
out of
embankment
like this?
Why does
this happen?
Remember, this all
occurs at the cellular
level!
No brain required!
Plants in
Motion
click
here
Tropism and Limiting Factors Journal
• Draw and label an example of each type of
tropism. For each, label it as positive or
negative:
– Gravitropism (gravity)
– Phototropism (light)
– Hydrotropism (water)
– Thigmotropism (touch)
• We will answer the question
at the bottom tomorrow!
Vocab Definitions:
Tropism (118)
Limiting factor (not in book)
When you finish,
work on your
Plant Parts you
Eat Worksheet
Let’s Review!
Take out a
sheet of paper
and number
from 1-10
1) What type of vascular
tissue is responsible
for transporting water
and minerals from the
roots to the leaves?
2) What do a leaf’s
stomata allow to
enter into a leaf?
3) Name an example
of a seedless
vascular plant.
4) What is the
chemical formula
for glucose?
5) On what part of
the stamen do the
pollen grains
form?
6) On what part of the
pistil must the
pollen grains land
in order to reach the
ovules in the ovary?
7) What are the upper
and lower cell
layers of a leaf
called?
8) What plant group
includes conifers,
ginkgoes, cycads and
other cone-bearing
plants with needles?
9) What part of the
plant is responsible
for delivering food
throughout the
plant?
10) Which part of a
flower develops into
the fruit once it has
been pollinated?
1) What type of vascular
tissue is responsible
for transporting water
and minerals from the
roots to the leaves?
xylem
2) What do a leaf’s
stomata allow to
enter into a leaf?
CO2
3) Name an example
of a seedless
vascular plant.
fern
4) What is the
chemical formula
for glucose?
C6H12O6
5) On what part of
the stamen do the
pollen grains
form?
anther
6) On what part of the
pistil must the
pollen grains land
in order to reach the
ovules in the ovary?
stigma
7) What are the upper
and lower cell
layers of a leaf
called?
epidermis
8) What plant group
includes conifers,
ginkgoes, cycads and
other cone-bearing
plants with needles?
gymnosperm
9) What part of the
plant is responsible
for delivering food
throughout the
plant?
phloem
10) Which part of a
flower develops into
the fruit once it has
been pollinated?
ovary