Life Cycle Analysis of Coal and Natural Gas-fired Power Plants
Life cycle of plants
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Transcript of Life cycle of plants
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LIFE CYCLE OF PLANTS
Unit 3 – Science Fusion
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What is a life cycle?
• The stages an organism or living
thing goes through during its life. The stages form a cycle that repeats again
and again.
https://www.youtube.com/watch?v=-GgWRnUMAwM
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How does the life cycle of a plant begin?
• Most plants come from seeds. A seed germinates when it breaks open and a small
plant grows out of it.
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FLOWERS• A flower is the part of some
plants when they become adults. The flower enables them to reproduce (make more plants similar to themselves)
• Flowers have male and femal parts that are involved in reproduction.
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Seed: it has a hard outer covering to
protect it.
Seedling: it is the tiny new plant that comes out of the
seed.
Adult Plant: the seedling grows into
an adult plant.
Fruit: flowers fall off the plant and the plant
makes a fruit. The fruit holds the seeds.
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CONES
• Some plants make seeds without flowers. Their seeds form in cones.
• Cones are the parts of some seed plants where reproduction occurs. Cones do not develop into fruit.
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POLLEN
• It is a powder-like material involved in plant reproduction. Plants that make seeds also make pollen.
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POLLINATION
• It happens when pollen is moved from the male plant part to the female plant part.
• The environment around a plant helps in pollination.
• Wind, water, and animals help move the pollen from plant to plant.
https://www.youtube.com/watch?v=26oq5tWrb2Q
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The pistil is the female part. The
seeds form in here!
The stamen is the
male part.
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Seeds are carried to new areas thanks to water, wind, and animals.
Look at some examples:
•Birds eat fruit, the seeds will pass through its body. The seeds may be left in a new place.
•Seeds may float in the wind and moved to new ground.
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SPORES• Spores are reproductive structures that can
grow into new plants. • Ferns are one type of plant that reproduces
using spores. They have leaves called FRONDS. Each frond has smaller leaves.
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SPORES• Moss is another type of plant that reproduces
using only spores. Mosses are small, soft plants. They usually grow in damp (wet) places.