How plants grow
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HOW PLANTS GROW? PowerPoint PPT Presentation


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HOW PLANTS GROW?. 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. Three essential condition for germination. Amount of moisture

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HOW PLANTS GROW?

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How plants grow

HOW PLANTS GROW?


Two phases in the life cycle of a plant

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.


Three essential condition for germination

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.


How plants grow

  • Oxygen- which when moisture is absorbed, oxygen takes in and carbon dioxide is given off by the seed.

  • Warmth and air in the soilwhich are needed to germinate seeds.


How plants grow

HYPOCOTYL


Hypocotylys

HYPOCOTYLYS

The part of the embryo that first grows downward into the soil forms the stem of the seedling.


How plants grow

EPICOTYL


Epicotyls

EPICOTYLS

The young leaves of the new plant.


Development of seed

DEVELOPMENT OF SEED


Reproductive stage

REPRODUCTIVE STAGE

  • A 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.


How plants grow

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.


Organs of reproduction of flowers

ORGANS OF REPRODUCTION OF FLOWERS


How plants grow

PISTIL

the female parts of the flowers which consist of an ovary with an upright extension.


Stigma

STIGMA

which lies on top of the style serves as the pollen-receptive surface.


Stamen

STAMEN

compose the male parts of the flower, each of which consist of a supporting filament and anther where the pollen grain is produce.


Fertilization

FERTILIZATION

takes place when a male nucleus in the pollen tube unites with the female nucleus of the ovule through a process called POLLINATION.


How plants grow

Quiz…..

INSTRUCTION: Identify the correct answer of the following question.

__________1. The young leaves of a new plant.


How plants grow

__________2. It is a period when flowers, fruits and seeds are developed.

__________3. The female parts of the flower.


3 the female parts of the flower 4 stage in plants includes the formation of roots and leaves

__________3. The female parts of the flower.___________4. Stage in plants includes the formation of roots, and leaves.


How plants grow

_________5. The part of the embryo that first grows downward to form the stem of the seedling.

II. Illustrate the development of the seeds.


Assignment

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?


The end

THE END


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