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Diversity Sec. 2.2 Notes

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by

Scott Comstock

on 4 November 2014

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Transcript of Diversity Sec. 2.2 Notes

Sec. 2.2 Notes
Learning Goal: Classify organisms as
producers, consumers, or decomposers.

Plants capture
energy
from the sun.
Plants turn light energy into
chemical energy
through a process called
photosynthesis
.
Plants take in
water
&
carbon dioxide
from the environment to make
sugars
from the carbon then releases the
oxygen
back into the environment.
The
leaves
take in the carbon dioxide.
The stems
support
the leaves and direct them toward the
sun
.
The roots anchor the plants in place & provide water &
nutrients
.
Plants are referred to as producers but are called
autotrophs
.
Autotroph means self-feeder.
They do not require an outside source of energy.

Storing and Releasing Energy:
plants use the
energy
captured as fuel for
cellular

growth
, as building materials to promote growth, and the rest is stored as
starches
.
as the plant needs food the starches are broken down to
sugars
.
Cellular Respiration
is a chemical process that releases
energy
from the
sugars
.

Plants are adapted to different environments:
plants have reproductive
adaptations
such as the ability to produce seeds quickly, and protective adaptations such as
thorns
or odors.
Plants respond to their environments:
plants respond to stimulus.
a stimulus is something that produces a response from an organism.
3 types of stimuli:
gravity
is a force that keeps everything on Earth.
plants respond to gravity through a sense of up & down, roots grow down and stems grow up.
touch
is another stimulus.
many plants have special stems called tendrils.
tendrils respond to
touch
of another object.
they will wrap their selves around objects to help in the plants growth.
light
is a powerful stimulus for plants.
auxin
is a plant hormone that stimulates plant
growth
.
auxin is in the
tip
of a plant and causes it to move
away
from light causing the plant to bend
toward
light.
Plants respond to seasonal changes
shorter days cause plants to go
dormat
.
this stops the growing and requires less
energy
.
LSO:
Show me what this looks like. Make sure you show and label the following terms; light energy, chemical energy, photosynthesis, water, carbon dioxide, sugar, oxygen, leaves, stem, roots, and nutrients.

Pop Quiz:
How do specialized cells relate to the different levels of organization?
What two cellular processes are involved in sexual reproduction?
Ooooppps, one more question,
What is an adaptation?

Table partner discussion;
What organisms other than plants use photosynthesis?
Talk to the person behind you about this question.
Where do plants store starch?
Name 2 protective adaptations and 2 adaptations for specific needs.
Discuss with the person 2 seats in front of you.
if you are not sure read page 54.
Ok . . . . . . . . . . . . . here is the music!
Pop Quiz
Match the definitions to the correct terms.

Definitions:
1. sperm or eggs are created.
2. a sperm and an egg join.
3. a group of cells that work together.

Terms:
a. tissue c. meiosis
b. organ d. fertilization
1. c = meiosis
2. d = fertilization
3. a = tissue
Wit & Wisdom
When you complain about doing the dishes, you usually get stuck doing them more often.
Random Trivia
for the person sitting in the cup cake chair.
Who is the owner of Curious George?
The man with the yellow hat
Full transcript