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Warm-up 14
Day 15 May 5/6
 List as many uses for plants as you can
think of.
Unit: Introduction to Plant
Science
Why are plants important?
 Provide oxygen
 Prevent famine
 Crops
 Cereal Grains - wheat, rice
 Ornamental
 Landscape design - indoors and outdoors
How are plants classified?
 Nonvascular: have no vessels, no roots, no
stems or leaves. (spores)
 Examples: Mosses & Liverworts
 Vascular: have vessels to transport food and
water. They have roots, stems and leaves.
 Example: Grass, corn, trees, flowers, bushes
 These are then broken down into Gymnosperms
and Angiosperms
Gymnosperms
 "naked seeds"
 cone bearing plants (seeds grow on
cones)
 needle like leaves
 usually stay green year round
 wind pollinated
 Examples: pine trees & evergreens
Angiosperms
 flowering plants
 seeds are enclosed in a fruit
 most are pollinated by birds & bees
 have finite growing seasons
 Examples: grasses, tulips, oaks,
dandelions
 Divided into two main groups:
Monocots & Dicots
What is a Monocot?
 Has one seed leaf
(cotyledon)
 Parallel leaf veins
 Fibrous roots
 Flower parts in 3’s
 Vascular tissue
scattered
 Examples: most
fruits, flowers,
palms
What is a Dicot?
 Has two seed leaves
(cotyledons)
 Network of veins in
leaves
 Primarily tap roots
 Flower parts in 4’s or
5’s
 Vascular tissue in
rings
 Examples: onion,
corn, wheat
Concept Map
 Create a Plant Classification Concept Map
using the notes thus far.
 Include details about each type of
classification (descriptions)
 Colorful
 Neat
How else are plants classified?
 By their life cycle
 Annual
 A plant that germinates, grows and dies in one growing season
 Examples: radishes, corn, many wildflowers
 Biennials
 A plant that germinates, grows and dies in two growing
seasons
 Examples: cabbage, beets, carrots
 Perennials
 A plant that germinates, grows and dies over more than a two
season period (3 or more)
 Examples: Boxwood Shrub, Palo Verde, Mesquite
Warm-up 15
Day 16 May 7/8
 Describe the classification of plants from
the largest group to most specific. (think
about the map we made)
 If you were looking at a flowering plant,
how would you know if it was a monocot
or a dicot? Explain.
What are the major parts of a
plant?
 Flower
 Leaves
 Stems
 Roots
Why are flowers important?
 Reproductive organ of the plant
 Flowers are usually both male and female
 The male part of the flower is the STAMEN
 The female part of the flower is the PISTIL
 See your coloring sheet for more detail on
flower anatomy
Pistil
Petal
Stamen
Ovules
Ovary
Sepal
Receptacle
intro_to_plants.ppt
How do plants reproduce?
 Pollen is produced by the stamen.
 Pollen moves away from the plant by the
wind or other pollinators (birds & bees)
 The pollen lands on the pistil of another
plant and fertilizes the eggs within the
ovary
How do plants reproduce?
 The flower petals fall off, the ovary
develops into a FRUIT that encloses
the seeds
 Fruits are dispersed in a variety of
ways (wind, animals)
 Fruits are not always edible, anything
with a seed inside can be considered a
fruit (helicopters, acorns, dandelions)
Pollination in Angiosperms
Reproduction in Gymnosperms
 Not all plants have flowers
 Cones
 Female cone has female sex cells and tend to be large
 Male cone has male sex cells and tend to be small
 Pollination
 Wind carries pollen to the female cone
 Ovules and pollen come together to form a seed.
 Cone falls and opens
Non-vascular Plants
 Moses
 Reproduction
 Gametophytes (sex cells)
 The male cells are splashed with water and they
swim to female cells.
 They mature to form spores
Asexual Reproduction in Plants
 Many plants can clone themselves, a
process called VEGETATIVE
PROPAGATION
 strawberry plants and other vine like plants
send out runners, which grow into new plants
 some plant clippings will grow into new
plants
 a Potato will grow into a new plant
Why are leaves important?
 Leaves provide the food needed for a plant
to survive
 Leaves perform Photosynthesis
What is photosynthesis?
 Leaves take in water, carbon dioxide and in
the presence of light produce oxygen and
carbohydrates (sugar)
 CO2 + H2O light O2 + C6H12O6
What are the parts of a leaf?
 Blade: helps with
collecting the sun’s
rays
 Veins: transport water
and nutrients
 midrib: central vein
 Petiole: point of
attachment to the stem
 Nodes: will grow if the
petiole is removed
What are the parts of a leaf?
 Stomata: pores within the leaf that
open to let CO2 in and O2 out. Guard
cells open and close.
 Cuticle: waxy covering on leaf that
prevents water loss
What are the two types of leaves?
 Simple
 Compound
Why is the stem important?
 Provide support
 Transport water through xylem
 Transport nutrients through phloem
 Two types of stems: herbaceous and
woody
What are the parts of a stem?
 Terminal bud: point
of new growth
 Lateral bud: point of
new growth
 Internode: in-between
points of growth
Leaf scar
Bud scale scar
Why are the roots important?
 Provide anchor for the plant
 Water and minerals are absorbed
 Movement of water up to leaves is
influenced by TRANSPIRATION
What are the three types of roots?
 Taproot: absorbs water
deep in the ground -
carrots, pecan trees
 Fibrous roots: roots stay
close to top soil - tomato,
bedding plants
 Adventitious: helps plant
climb or anchor - ivy,
strawberries, some
grasses
What are the parts of a root?
 Primary root: the
first root to grow
 Secondary roots:
branch off of the
primary root
 Root hairs: these
account for 95% of
water absorption
How does a plant grow?
 Germination occurs when a seed
sprouts (usually caused by changes of
temperature and moisture)
 Monocots have 1 seed leaf (cotyledon),
Dicots have 2 seed leaves
How do plants respond to the
environment?
 Response to a stimulus in the plant’s
environment
 Gravitropism – gravity tells the plant where
the ground is
 Phototropism – responding to sunlight
 Hydrotropism – responding to water
 Thigmotropism – responding to touch
 Chemotropism – responding to chemicals

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intro_to_plants.ppt

  • 1. Warm-up 14 Day 15 May 5/6  List as many uses for plants as you can think of.
  • 2. Unit: Introduction to Plant Science
  • 3. Why are plants important?  Provide oxygen  Prevent famine  Crops  Cereal Grains - wheat, rice  Ornamental  Landscape design - indoors and outdoors
  • 4. How are plants classified?  Nonvascular: have no vessels, no roots, no stems or leaves. (spores)  Examples: Mosses & Liverworts  Vascular: have vessels to transport food and water. They have roots, stems and leaves.  Example: Grass, corn, trees, flowers, bushes  These are then broken down into Gymnosperms and Angiosperms
  • 5. Gymnosperms  "naked seeds"  cone bearing plants (seeds grow on cones)  needle like leaves  usually stay green year round  wind pollinated  Examples: pine trees & evergreens
  • 6. Angiosperms  flowering plants  seeds are enclosed in a fruit  most are pollinated by birds & bees  have finite growing seasons  Examples: grasses, tulips, oaks, dandelions  Divided into two main groups: Monocots & Dicots
  • 7. What is a Monocot?  Has one seed leaf (cotyledon)  Parallel leaf veins  Fibrous roots  Flower parts in 3’s  Vascular tissue scattered  Examples: most fruits, flowers, palms
  • 8. What is a Dicot?  Has two seed leaves (cotyledons)  Network of veins in leaves  Primarily tap roots  Flower parts in 4’s or 5’s  Vascular tissue in rings  Examples: onion, corn, wheat
  • 9. Concept Map  Create a Plant Classification Concept Map using the notes thus far.  Include details about each type of classification (descriptions)  Colorful  Neat
  • 10. How else are plants classified?  By their life cycle  Annual  A plant that germinates, grows and dies in one growing season  Examples: radishes, corn, many wildflowers  Biennials  A plant that germinates, grows and dies in two growing seasons  Examples: cabbage, beets, carrots  Perennials  A plant that germinates, grows and dies over more than a two season period (3 or more)  Examples: Boxwood Shrub, Palo Verde, Mesquite
  • 11. Warm-up 15 Day 16 May 7/8  Describe the classification of plants from the largest group to most specific. (think about the map we made)  If you were looking at a flowering plant, how would you know if it was a monocot or a dicot? Explain.
  • 12. What are the major parts of a plant?  Flower  Leaves  Stems  Roots
  • 13. Why are flowers important?  Reproductive organ of the plant  Flowers are usually both male and female  The male part of the flower is the STAMEN  The female part of the flower is the PISTIL  See your coloring sheet for more detail on flower anatomy
  • 16. How do plants reproduce?  Pollen is produced by the stamen.  Pollen moves away from the plant by the wind or other pollinators (birds & bees)  The pollen lands on the pistil of another plant and fertilizes the eggs within the ovary
  • 17. How do plants reproduce?  The flower petals fall off, the ovary develops into a FRUIT that encloses the seeds  Fruits are dispersed in a variety of ways (wind, animals)  Fruits are not always edible, anything with a seed inside can be considered a fruit (helicopters, acorns, dandelions)
  • 19. Reproduction in Gymnosperms  Not all plants have flowers  Cones  Female cone has female sex cells and tend to be large  Male cone has male sex cells and tend to be small  Pollination  Wind carries pollen to the female cone  Ovules and pollen come together to form a seed.  Cone falls and opens
  • 20. Non-vascular Plants  Moses  Reproduction  Gametophytes (sex cells)  The male cells are splashed with water and they swim to female cells.  They mature to form spores
  • 21. Asexual Reproduction in Plants  Many plants can clone themselves, a process called VEGETATIVE PROPAGATION  strawberry plants and other vine like plants send out runners, which grow into new plants  some plant clippings will grow into new plants  a Potato will grow into a new plant
  • 22. Why are leaves important?  Leaves provide the food needed for a plant to survive  Leaves perform Photosynthesis
  • 23. What is photosynthesis?  Leaves take in water, carbon dioxide and in the presence of light produce oxygen and carbohydrates (sugar)  CO2 + H2O light O2 + C6H12O6
  • 24. What are the parts of a leaf?  Blade: helps with collecting the sun’s rays  Veins: transport water and nutrients  midrib: central vein  Petiole: point of attachment to the stem  Nodes: will grow if the petiole is removed
  • 25. What are the parts of a leaf?  Stomata: pores within the leaf that open to let CO2 in and O2 out. Guard cells open and close.  Cuticle: waxy covering on leaf that prevents water loss
  • 26. What are the two types of leaves?  Simple  Compound
  • 27. Why is the stem important?  Provide support  Transport water through xylem  Transport nutrients through phloem  Two types of stems: herbaceous and woody
  • 28. What are the parts of a stem?  Terminal bud: point of new growth  Lateral bud: point of new growth  Internode: in-between points of growth Leaf scar Bud scale scar
  • 29. Why are the roots important?  Provide anchor for the plant  Water and minerals are absorbed  Movement of water up to leaves is influenced by TRANSPIRATION
  • 30. What are the three types of roots?  Taproot: absorbs water deep in the ground - carrots, pecan trees  Fibrous roots: roots stay close to top soil - tomato, bedding plants  Adventitious: helps plant climb or anchor - ivy, strawberries, some grasses
  • 31. What are the parts of a root?  Primary root: the first root to grow  Secondary roots: branch off of the primary root  Root hairs: these account for 95% of water absorption
  • 32. How does a plant grow?  Germination occurs when a seed sprouts (usually caused by changes of temperature and moisture)  Monocots have 1 seed leaf (cotyledon), Dicots have 2 seed leaves
  • 33. How do plants respond to the environment?  Response to a stimulus in the plant’s environment  Gravitropism – gravity tells the plant where the ground is  Phototropism – responding to sunlight  Hydrotropism – responding to water  Thigmotropism – responding to touch  Chemotropism – responding to chemicals