TWO PHASES IN THE LIFE CYCLE OF A PLANT 1. VEGETATIVE STAGE - includes the growth of roots, stem and...
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Transcript of TWO PHASES IN THE LIFE CYCLE OF A PLANT 1. VEGETATIVE STAGE - includes the growth of roots, stem and...
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HOW PLANTS GROW?
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TWO PHASES IN THE LIFE CYCLE OF A PLANT
1. VEGETATIVE STAGE- includes the growth of
roots, stem and leaves.
2. REPRODUCTIVE STAGE-the development of
flowers, fruits and seeds takes place.
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Three essential condition for germination
Amount of moisture needed to soften the
seed coat and to help in the circulation of food which the seed contains.
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Oxygen- which when moisture is absorbed, oxygen takes in and carbon dioxide is given off by the seed.
Warmth and air in the soil which are needed to germinate seeds.
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HYPOCOTYL
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HYPOCOTYLYS
The part of the embryo that first grows downward into the soil forms the stem of the seedling.
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EPICOTYL
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EPICOTYLS
The young leaves of the new plant.
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DEVELOPMENT OF SEED
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REPRODUCTIVE STAGEA stage in a plant life that begins with the
production of flowers and ends with the maturing of seeds. The flowers is a specialized branch of a plant designed for sexual reproduction or production of seeds.
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FLOWERS Is a specialized branch of plant designed
for production of seed. It is made up of organs like sepals, stamens, pistil, petals and accessory organ for production.
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ORGANS OF REPRODUCTION OF
FLOWERS
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the female parts of the flowers which consist of an ovary with an upright extension.
PISTIL
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STIGMA
which lies on top of the style serves as the pollen-receptive surface.
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STAMENcompose the male
parts of the flower, each of which consist of a supporting filament and anther where the pollen grain is produce.
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FERTILIZATION
takes place when a male nucleus in the pollen tube unites with the female nucleus of the ovule through a process called
POLLINATION.
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INSTRUCTION: Identify the correct answer of the following question.
__________1. The young leaves of a new plant.
Quiz…..
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__________2. It is a period when flowers, fruits and seeds are developed.
__________3. The female parts of the flower.
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__________3. The female parts of the flower.
___________4. Stage in plants includes the formation of roots, and leaves.
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_________5. The part of the embryo that first grows downward to form the stem of the seedling.
II. Illustrate the development of the seeds.
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ASSIGNMENT 1. What are the factors in choosing a garden or farm site?
2. Why it is important to make a plan in selecting the farm site?
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THE END