Transcript Stems

Topic: Plants
Aim: Describe the structure of plants.
Do Now: Take out your plant reading
notes.
HW: Tropisms reading notes due
tomorrow.
CL Evolution due Wednesday.
1. Identify the common
ancestor.
2. Identify the species
that are NOT extinct.
Explain why they are
still present.
3. Identify a species
that has become
extinct and explain
why.
4. Which part of
Darwin’s theory does
this diagram
represent? Support
your answer.
8. Identify the • Sunlight
source of
energy that is
needed for
photosynthesis.
9. Identify the
products of
photosynthesis.
• C6H12O6 and O6
•
Used
to
produce
10. Explain the
energy
importance of
glucose.
• Stored as starch
11. Explain the • Used to cellular
respiration
importance of
oxygen.
Equation for photosynthesis
light
Carbon + water
Chlorophyll
dioxide
CO2
H2O
glucose + oxygen + water
(food)
C6H12O6
(wastes)
H2O
O2
1. Describe • Substance that
reflects a part of the
what a
visible spectrum and
pigment is.
absorbs the rest.
2. Explain • Green light is
why a plant reflected.
looks green. • The rest of the visible
light is absorbed.
3. Identify the • Red and blue
colors of the
visible spectrum
that are most
effective for
photosynthesis.
4. State 4
differences
between
photosynthesis
and aerobic
respiration.
PHOTOSYNTHESIS
Energy is stored.
AEROBIC RESPIRATION
Energy is released.
H2O and CO2 are raw materials C6H12O6 and O2 are raw materials
C6H12O6 and O2 are products H2O and CO2 are products
Takes place in chloroplasts
Takes place in mitochondria
1. Identify
the type of
tissue that
transports
water and
nutrients
throughout
a plant.
• Vascular tissue
2. Identify
the type of
plants that
contain
vascular
tissue.
• Tracheophytes
• Vascular plants
3. Identify • Xylem: transports water and
the 2 types dissolved minerals
of vascular • Phloem: transports food
tissue and
describe
the
difference
between the
2 types.
•
Roots
4. Identify
the 3 main • Stems
•
Leaves
parts of a
plant.
1. ROOTS:
• Anchor plants
• Absorb water
and minerals
from the soil
• Store food for
plants
Stems:
• Support the
branches,
leaves and
reproductive
structures
• Hold the
leaves up to
get sunlight
• Contain vascular
tissue:
– Xylem:
carries H2O
up the plant
– Phloem:
carries food
from leaves
throughout
the plant
2 types of stems:
Herbaceous stems
Woody stems
Leaves:
site of photosynthesis
Palisade
layerC
D
Vein
E
Spongy
latyer
A
Guard cells
B
Stomate
5. Identify
the plant
structure
being
described.
a.
b.
c.
d.
Support the plant’s branches and leaves. Stems
Absorbs water and dissolved substances. Roots
Site of photosynthesis. Leaves
Anchors plants to keep them in their location.
Roots
e. Transports water and substances to the leaves
Stems
.
a. Can also store food for plants to use. Roots
6. Identify the structures that enable roots to
absorb more water. Root hairs
Let’s summarize…
1. Identify the three main parts of
plants.
2. Describe the importance of roots.
3. Describe what is found inside of
stems.
4. Where does photosynthesis occur
in plants?
5. Why are leaves flat and broad?
In which part of the plant does
most food-making occur?
1. root
2. root hair
3. leaf
4. stem
The tissue that carries water and
minerals up from the roots
through a plant is the
1.cambium
2.xylem
3.phloem
4.tuber
Water is absorbed into the plant
through the
1.root hairs
2.leaves
3.chloroplasts
4.stem
The tissue the carries food
substances down from the plant’s
leaves is the
1.cambium
2.xylem
3.phloem
4.tuber
Describe the conclusion that can be made
about the fossils in layer A and layer B.
Fossils in layer A are older and less
complex than the fossils in layer B.
The diagram above shows a series of bone
structures in four different species of vertebrates.
1. What are these structures called? Homologous
structures
2. Explain how these structures support the theory
of organic evolution. Because they are similar in
structure, these organisms may
have evolved from a common
ancestor.
“Evolution is the result of long periods
of stability interrupted by geologically
brief periods of significant change.”
This concept is called:
1. gradualism
2. natural selection
3. geographic isolation
4. punctuated equilibrium
The Florida panther, a member of
the cat family, has a population of
fewer than 100 individuals and has
limited genetic variation. What
inference can be made according
to the information given?
If there is a major environmental
change and their adaptations are no
longer favorable, the species will
become extinct.
1. Which letter
represents a
common ancestor
for species C and
E? K
2. Which species
are least likely to
be vital parts of a
present-day
ecosystem?
E and J
The substance is green plants that
captures the sun’s light energy is
1. chlorophyll
2. mesophyll
3. phloem
4. cuticle
During photosynthesis, molecules
of carbon dioxide and water are
changed into
1.oxygen and carbon dioxide
2.glucose and water
3.glucose and chlorophyll
4.oxygen and glucose
Which of the following materials is
not needed for photosynthesis?
1.sunlight
2.chlorophyll
3.water
4.oxygen
A process in which glucose is
broken down to release energy is
called
1.diffusion
2.respiration
3.photosynthesis
4.osmosis
Aerobic respiration requires
1.oxygen
2.carbon dioxide
3.light
4.chlorophyll
One substance that is generated
from aerobic respiration is
1.ATP
2.protein
3.glucose
4.oxygen
Respiration occurs in
1.chloroplasts
2.nuclei
3.mitochondria
4.ribosomes
Leaf Structure
• http://www.youtube.com/watch?v=mpPwm
vtDjWw
• http://www.phschool.com/science/biology_
place/biocoach/photosynth/leaf.html
• http://www.phschool.com/science/biology_
place/biocoach/photosynth/mesophyll.html