Transcript Plants

PLANTS
A Guide To Plant Characteristics
Biologyguy
7th Grade Content Standards
7.1 All living things are composed of cells, from
just one to many trillions, whose details usually
are visible only through a microscope.
7.5 The anatomy and physiology of plants and
animals illustrate the complementary nature of
structure and function
7.7 Scientific progress is made by asking
meaningful questions and conducting careful
investigations.
May be used as a general introduction to Plants
Plants
Lesson Objectives: students will be able
to (SWBAT)
Describe the basic characteristics and
features of plants.
Compare and contrast the features of
humans and plants
Warm up: Scramble
1.
2.
3.
4.
5.
6.
Used to absorb water from the ground
Flat surface which is used to absorb sunlight
Long thin structure that runs throughout the plant
and transports water
Something that is found in the cells of leaves and is
used in photosynthesis
This is how plants make their own food
Plants are usually this color
fela
mets
stoor
gerne
cthlosalrop
thephsisotonsy
Plant Characteristics and features
FEATURE
Write each feature and then
match it to the correct
function:
1. Used to carry water to parts of
the plant
2. It is shaped so that it can
absorb sunlight
3. Elongated structure that
absorbs water from the ground
4. The colorful part of the plant
which attracts insects and
contains the plants
reproductive parts
Plant Characteristics
Leaves:
They have a waxy cuticle that acts as a
barrier, it reduces water loss and resists
against virus and bacteria
Large flat surface area, to maximize the
amount of sunlight that can be absorbed
Guard Cells and Stoma Allow for the
absorption and transfer of carbon dioxide
and oxygen, which are important in
respiration and photosynthesis
LEAVES: match the feature with the function
Waxy cuticle
Large surface area
Guard cells and stoma
Gas exchange
Protective barrier
photosynthesis
The STEM:
The Stem contains specialized
structures which transport materials
between the roots, leaves and
reproductive structures
Some stems store materials, for
example cactus store water
Stems support the plant and keep it
upright, this helps leaves get sunlight
and allows flowers and reproductive
structures to be accessible by insects
THE STEM: Transports materials through the Phloem and Xylem
THE STEM: Keeps the plant upright, allows
leaves to grow and holds the flower upwards
for insects to pollinate
Colorful flower to
attract insects for
pollination
Reproductive parts
are in the flower
Leaves
Cactus
Stores water
Has spikes to protect
it from being eaten
Thick cuticle to
reduce water loss
Has small leaves for
photosynthesis
ROOTS:
Roots absorb
water from the
ground
They anchor the
plant to the ground
They store food,
made during
photosynthesis in
the form of sugar
or starch
ROOTS:
Hold the plant in
place
Store plant food
that is made during
photosynthesis
Absorb water for
photosynthesis
THE FLOWER
Brightly colored to
attract insects for
pollination
Contain the plants
male and female
reproductive organs
Produce the seed
THE FLOWER: Reproduction
Stamen = Male
Pistil = Female
How do plants reproduce?
Sexually: this involves 2 parents that
give rise to offspring that are not
identical to the parent but share genetic
similarities
Asexually: involves one parent that
produces offspring identical to the
parent
Sexual reproduction in plants:
Pollen from the
male anther must
touch the stigma
(female) part of
the plant.
This forms a
pollen tube
The sperm makes
its way down the
tube and fertilizes
the ovule (egg) to
produce a seed
Sexual = occurs between 2 different plants
Asexual= same plant
Sexual Reproduction: Cross pollination
ASEXUAL REPRODUCTION:self pollination
Occurs
Occurs in the same flower,
Pollen from the anther lands
On the stigma
Occurs between 2 flowers in the
Same plant.
From Flower to Fruit
Following the fertilization of the egg by the
sperm, the ovule turns into a zygote and then
a seed forms. The surrounding ovary then
swells up to protect the seeds.
The fruit is edible, this increases seed
dispersal as the seeds are excreted by
animals and humans and grow in a new area
away from the parent plant
Ovules make seeds
Ovary forms the fruit
Plant Model
1) Create a plant model to describe the
shape and features of a plant. (use
activity sheet “Build a plant”
2) Describe each feature: stem, flower,
root, leaf
3) Stick your model to your poster
information sheet.
Plant Cells
Plants are made
of Eukaryotic
Plant cells.
Cell wall*
Large vacuole*
Chloroplast*
* Only found in a plant cell
Produce a rap/song about
plant characteristics
Quiz
1) Which of the following is used to absorb
sunlight for photosynthesis and is the place
where this process occur
A. Leaf
B. Root
A. LEAF
C. Stem
Which structure contains the
xylem and phloem?
A. Leaf
B. Stem
B. STEM
C. Root
D. flower
When a bee transfers pollen
from one plant to another this
is an example of what?
A. Self fertilization
B. Cross pollination
C. Self pollination
D. Asexual reproduction
B. Cross Pollination
In Which structure would a
plant store sugars in the form
of starch?
A. Roots
B. Leaves
C. Flower
D. Stem
A. Roots
Which of the following is not a
function of the leaf’s waxy
cuticle
A. To reflect sunlight
B. Protect the leaf
C. Act as a barrier from virus and bacteria
D. Prevent water loss
A. Reflect sunlight
Investigation
1) Using Scientific investigation explore the
conditions which are needed for a plant to
grow.
Conditions: Warm, Cool, Soil, No Soil, Light,
dark, water, no water
2) Pick a minimum of 2 complimentary
conditions and then follow the process of
Scientific investigation to find the answer
What conditions are needed
for plants to grow?
1) Question
2) Make a Prediction
3) Form a Hypothesis (what you think will
happen based on science theory)
4) Diagram
5) Method
6) Results
7) Conclusion
8) Evaluation
See Plant investigation worksheet