AGENDA APR 24 Objectives: Describe what plants need to survive. Explain the characteristics of...
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AGENDA APR 24 Objectives: Describe what plants need to survive. Explain the characteristics of different groups of plants. 1. Chapter 21 Written Response 2. Introduce Chapter 22 Plant Diversity 3. Review and Homework
AGENDA APR 24 Objectives: Describe what plants need to survive. Explain the characteristics of different groups of plants. 1. Chapter 21 Written Response
AGENDA APR 24 Objectives: Describe what plants need to survive.
Explain the characteristics of different groups of plants. 1.
Chapter 21 Written Response 2. Introduce Chapter 22 Plant Diversity
3. Review and Homework
Slide 2
Question of the Day APR 24 EOC REVIEW The first plants evolved
from A. Red algae B. Green algae C. Brown algae D. Golden
algae
Slide 3
Chapter 22: Plant Diversity
Slide 4
22-1 Intro to Plants Classified by the following
characteristics Multicellular Eukaryotes Cells walls made of
cellulose. Multicellular embryos. Photosynthesis Chlorophyll a and
b
Slide 5
What do plants need to survive? Work with a partner to decide
which basic necessities of life are required by plants. Include a
brief explanation why a plant requires each one.
Slide 6
What Plants Need to Survive Sunlight energy for photosynthesis
Water and Minerals electrons for LDR plant growth Gas Exchange
Oxygen for Respiration Carbon Dioxide for Photosynthesis Movement
of Water and Nutrients Carry products of photosynthesis to parts of
plant.
Slide 7
Life Cycle and Survival Sporophyte diploid phase (2N) Spore
producing plant Gametophyte haploid phase (N) produces gametes
Basic Needs Sunlight energy for photosynthesis Water, Minerals, Gas
Exchange Movement of Water and Nutrients
Slide 8
Overview of Plants First plants evolved from multicellular
green algae Four GROUPS 1. Mosses2. Ferns 3 Derived
Characteristics3. Conifers4. Flowering Water-conducting tissues
Seeds Flowers
Slide 9
Slide 10
AGENDA APR 27 Objectives: Describe what plants need to survive.
Explain the characteristics of different groups of plants. 1.
Chapter 22: Four main groups of plants 2. QUIZ TOMORROW 3. Review
and Homework Review Questions STUDY!!!
Slide 11
Evolution of Plants https://www.youtube.com/watch?v=X4L3r_XJW0I
Begin at 5:00
Slide 12
22-2 Bryophytes Mosses, liverworts, and hornworts Require water
for reproduction No vascular tissues Water taken in by osmosis Very
low to ground Rhizoids root like structures Long thin cells draw up
water and minerals
Slide 13
22-3 Seedless Vascular Plants Specialized to conduct water and
nutrients through plant XYLEM specialized tissue to transport water
up the plant made of tracheids. PHLOEM tissue that transports
solutions of nutrients and carbohydrates. Both can move materials
against the force of gravity. LIGNIN makes cell walls rigid Plants
grow upright
Slide 14
Ferns, Club Mosses, and Horsetail Roots absorb water and
minerals Leaves photosynthetic organs Stems support structures
carry water and nutrients
Slide 15
22-4: Seed Plants GYMNOSPERMS Bear seeds on cones ANGIOSPERMS
flowering plants bear seeds within tissue. Methods of fertilization
Flowers or cones Transfer of sperm by pollination Protection of
embryos in seeds
Slide 16
Reproductive Parts Cones and flowers seed-bearing sporophyte
structures Gametophytes live inside Pollination transfer of pollen
by wind, insects, animals. Seeds contain embryos Protection and
food supply
Slide 17
22-5: Angiosperms Flowers are reproductive organs. Contain
ovaries surround and protect seeds Seeds produced within ovaries
Ovaries mature into fruits Fruits aid in the dispersion of
seeds
Slide 18
Slide 19
AGENDA APR 28 Objectives: Describe what plants need to survive.
Explain the characteristics of different groups of plants. 1.
Plants Quiz 2. Monocots and Dicots 3. Chapter 23: Roots, Stems, and
Leaves 4. Review and Homework Complete Question Packet - DUE
Tomorrow!
Slide 20
Monocots and Dicots https://www.youtube.com/watch?v=zHp_voyo7MY
0 2:00
Slide 21
ROOTS, STEMS, and LEAVES
Slide 22
23-1: Specialized Tissues in Plants Three Principal Organs of
Seed Plants 1. ROOTS absorbs water and dissolved nutrients 2. STEMS
support system for the plant body 3. LEAVES main photosynthetic
systems
Slide 23
Plant Tissue Systems Dermal tissue single layer of epidermal
skin cells Thick waxy cuticle protects against water loss and
injury Vascular tissue transports water and nutrients Xylem Phloem
Ground tissue cells between dermal and vascular
Slide 24
Growth and Meristematic Tissue Most plants produce new cells
for as long as they live Indeterminate growth at tips of roots and
stems Meristems responsible for growth New cells produced in
meristematic tissue are not specialized. What is
differentiation?
Slide 25
Apical Meristems
Slide 26
Plant Nutrition and Transport
https://www.youtube.com/watch?v=bsY8j8f54I0
Slide 27
23-2 ROOTS Taproot long thick primary root Small secondary
roots Fibrous root large cluster of roots all of the same
size.
Slide 28
Root Functions 1. Anchor plants to the ground 2. Absorb
nutrients and water Active transport required to take in minerals
from soil Root pressure required to move or push water up through
the xylem to other parts of the plant.
Slide 29
22-3 STEMS Three major functions 1. Produce leaves, branches,
and flowers. 2. hold leaves up to sunlight 3. transport substances
between roots and leaves Monocot StemDicot Stem Vascular bundles
scatteredArranged in Throughout stemorganized, ringlike
patterns
Slide 30
23-4: Leaves Absorbing light and carrying out photosynthesis
Blades thin flattened sections collect sunlight Petioles attach
leaves to the stem Cuticle and epidermal cells Protection and
prevents evaporation of water
Slide 31
Leaf Functions Photosynthesis occurs in mesophyll - specialized
ground tissue. Stomata pore-like openings that allow CO2 and O2
into/out of cell. Guard cells control opening and closing of
stomata Respond to Water Pressure
Slide 32
Guard Cells and Stomata Stomata open during daytime Closed at
night. Transpiration water loss through a plants leaves
Slide 33
23-5: Transport in Plants Three forces needed for Water
transport 1. Root pressure 2. Capillary action 3. Transpiration
Adhesion the attraction of water molecules with unlike molecules
H2O forms hydrogen bonds Capillary action is the attraction of
water to the walls of a tube water climbs higher in thinner
tubes
Slide 34
Transpirational Pull
https://www.youtube.com/watch?v=mc9gUm1mMzc Water is high = Open
Stomata Excess water lost through transpiration Water is low = H2O
pressure drop Guard cells close stomata
Slide 35
Pressure-Flow Hypothesis Nutrients pumped into or removed from
PHLOEM Change in concentration of fluid also occurs Nutrients move
from a high concentration SOURCE low concentration SINK ROOT LEAF
OR LEAF ROOT