SITTING IN ASSIGNED SEATS
WORKING ON SOMETHING QUIETLY
GETTING OUT YOUR SUPPLIES…PENCIL AND NOTEBOOK

Look at the 3 images below….explain in your
own words what you think is happening in
each picture


Understand what TROPISM is.
Understand the 4 ways that plants change
the way they grow based on their
environment.
 Add entry to Table of Contents
6.L.2.2 Plant Adaptations
 Assign the next number

 Label Next Available Page:
6.L2.2 Plant Adaptations
 Number page to match Table of
Contents entry
 Circle the number


Tropism: process of plants changing due to a
stimulus (changes in their environment)

Plants can change
 Their growth
 When they reproduce
 The position of their roots, stems and leaves

Environmental changes (stimuli) that effect
plants:
 Gravity
 Sunlight
 Touch
 Moisture (water)

Phototropism: the way a plant grows or
bends because of sunlight

Draw a picture of what a plant would look like
if it ONLY had light coming on to it from the
RIGHT side.



Tropism Animation
Glossary Term - Tropism
http://app.discoveryeducation.com/search?N
tt=tropism

http://www.youtube.com/watch?v=Ze8NV7c
vW8k

http://www.youtube.com/watch?v=_QBhAwi
ks1Y




Geotropism: the way a plant grows or bends
because of gravity
Plant structures can sense up and down
Stems of plants grow upright
Roots of plants grow down

http://www.youtube.com/watch?v=mYZXax8
V_L0

Thigmotropism: the way a plant grows or
bends because of touch (stimulus).

Clematis are known for twining vines that revolve as they
grow, making a full circle until they find an object to climb;
this searching process is known as thigmotropism.

http://www.youtube.com/watch?v=_SIJ4ov_F
xA

http://www.youtube.com/watch?v=zQ3U_a_7
mA8


Hydrotropism: the way a plant grows due to
the presence of water (stimulus).
When roots sense water, they bend and
grows towards it.

http://leavingbio.net/Plant%20Responses_fil
es/image008.gif



Stimulus (changes) can be positive or
negative.
Positive = toward stimulus
Negative = away from stimulus
Plant moving
toward stimulus
(the sun).

Negative = roots growing
away from sun.

The roots are growing
AWAY from the sun
because they need water
for survival.

Draw the tree with roots
on your paper and label the
positive and negative.


http://www.youtube.com/watch?v=uX5eoxK
bzHE

Mr. Parr

Draw a picture showing the 4 ways plants are
affected in how they grow.

http://plantsinmotion.bio.indiana.edu/plantm
otion/movements/tropism/tropisms.html

Teams of 2 or 3 with the students around you.

We will read an article about tropism together.

Pencils are DOWN while reading the article.

Then you will answer question 1 with your partner.

As SOON as you know the answer and you have BOTH
written it on your paper. You can run up and ring the bell.

Points:
First team: 3 points
Second team: 2 points
Third team: 1 point