Transcript PowerPoint - Plants That Fight Back

Some plants can
defend themselves. If
you touch them, they
can sting you. (P 1)
defend
[verb]
to be on the defensive;
act against an attack
Protect yourself from
being hurt, or your
character stays alive in
a video game.
You have to defend yourself in the video
game. How will you protect yourself?
When I play my video games I defend ,
myself by
___________________________.
The tree’s thorns are its first type of
defense. Do not try to touch one of
these thorns. You will get
scratched.
(P 2)
thorns
[noun] a small sharp-pointed tip
resembling a spike on a stem or
leaf
The really sharp part of a rose.
What is something that has a thorn
that you have touched?
The thorn _____ when I
touched it.
Their leaves and stems look
harmless, but they are covered
by tiny stinging hairs. The hairs
are as sharp as glass.
(P 6)
sting
[verb] cause a sharp or stinging
pain or discomfort
Usually a bee sting, it pinches
your skin
What is an example of something
that can sting?
_________ can sting ____.
If they do, the tree pumps poison
into its leaves. This poison makes
the leaves taste awful.
(P3)
poison
[noun] anything that harms or
detroys
Could be a kitchen cleaner, or
something that would make you
really sick. Its dangerous.
Why do you think plants would have
poison ?
I infer that plants would
have poison because
___________.
They learned that when an
acacia’s leaves fill with poison, the
leaves let out a gas into the air.
This gas tells other acacia trees to
pump poison into their leaves.
(P 5)
gas
[noun] a fluid in the gaseous state
having neither shape nor volume
Something that you can’t see in
the air.
What are some specific examples of
things that have gas?
You know what has gas?
________________has gas.
Their leaves and stems look
harmless, but they are
covered by tiny stinging
hairs.
(P 6)
harmless
[adjective] not causing or
capable of causing harm
Something that will not
bother you. Its safe to use.
Can you think of a time when you
touched something that was
harmless ?
Once, I touched a
______________ but it was
harmless.