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PlantsUnit 3 Lesson 2
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Objective:
1. Identify the word lifecycle and Embryo.
2. Arrange lima bean life cycle.3. Identify Maturity and
Germination stages.
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Vocabulary:
Germination Maturity Life cycle Embryo
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Warm up
Where do plants come from?
Seed
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What is an embryo ?
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1-Describe each stage of the radish’s life cycle2- Are they in order?
A B
C D
Sprouting
germination
Mature plantLike a grown up which makes new seeds
Seed
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Stage 1 Stage 2
Stage 3
Stage 4
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What does life cycle mean?
• The series of stages that a living thing goes through as it develops is called a life cycle.
• Most of our food comes from plants.
• Most plants grow from seeds.
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How does a seed grow? Video
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Exit Slip: In your copybook name each stage of plant life cycle.
Choose from these vocabs:GerminationSproutingSeedsMaturity
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H.W 1 Active Reading sheet.Write vocab words germination and maturity
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Bring different seeds from home for next lesson from the food you eat
Bonus
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Meanings : Germination= When seed sprouts and the embryo seed starts to grow.
Maturity= When plant grows to it’s full size. Mature plants can make new seeds.
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Lesson 2Warm up: Thinking …… What was the 1st step in the life
cycle of a bean plant?
Where is a seed formed?Flower and Cones
How is the seed produced?Sexual Reproduction
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Flowers and Cones
What is reproduction?
1.Increase in number
Or2.Getting more of the same kind
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Reproduction = to make – again.
Mother Father
Puppies
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Soooo..How are seeds formed?
1.Male share (sperm cells) 2.Female share (egg cells)
When the male and the female sex cells join together Fertilization
so this called sexual reproductionSo when it comes to flowers …
Which part is the female and which is the male ?
video
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Flowers and Cones
Identify the parts of a flower.
Petal Stamen
StemPistil
Anther Male part of a flower
Female part of the
flower
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Flowers and ConesFertilization
Sexual Reproduction
Egg cell + Sperm cell = Embryo(in this case the embryo inside plant seed)
1)Some have both organs in same structure
2)Others have both organs on 2 separated structures
means
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Exit Slip 2 :
Pistil Anther Stamen petalStalk(stem)
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HOMEWORK 2 1. Write vocab word fertilization from the
glossary
2. Study the flower diagram page 120 from your books
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Lesson 3:What is fertilization?
Reproduction is done in 3 steps in plants :
1. Pollination2. Fertilization
3. Seed DispersalVideo 1Video2
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1-Power of pollinationPollination
Process of pollen moving from a male plant part to
a female plant part.
1)Wind
2)Animals
Wind can blow the pollen
Brightly colored flower petals attract pollinators
e.g Bees , Birds, Butterflies
1)Wind
Video
3)Water
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Pollination1. When the pollen on the stamen
rubs off on the butterfly. 2. When the butterfly visits the next
flower, the pollen may drop off and fall on the pistil.
3. Now the flower will be pollinated.
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Exit Slip 3 :
List three ways of pollination:1- -----------------2- -----------------3- -----------------
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2-Fertilization
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3-Seed DispersalHow can a plant’s seeds be spread from place to place?
1)
2)
3)
Video
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Exit Slip 4 :
List three ways of seed dispersal:1- -----------------2- -----------------3- -----------------
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Classwork:
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Lesson 4:Asexual Reproduction Some plants grow from seeds and other
plants grow from structures called spores.
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Classwork :
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Exit slip: (in copy book) Give one word : -A reproductive structure of some
plants, such as mosses and ferns that can form a new plant.
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Wrap Up
Life Cycle of a Plant Germination
Growing plant
Mature plant
Pollination
Fertilisation
Dispersal of seeds
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Wrap up video:
Video