Understand how plants grow and reproduce. Recognize the life cycles of different types of plants....
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Transcript of Understand how plants grow and reproduce. Recognize the life cycles of different types of plants....
• Understand how plants grow and reproduce.
• Recognize the life cycles of different types of plants.
PLANT LIFE CYCLES
http://www.youtube.com/watch?v=ls6wTeT2cKA
Inquiry Investigation What do plants need to survive? Make a Hypothesis!
What does a seed need to grow? Make a Hypothesis!
Vocabulary Chapter 1 Lesson 2•Cone- a structure in conifers that makes seeds.•Embryo- a young plant inside a seed.•Flower- a structure in flowering plants that makes seeds.•Fruit- a structure that holds seeds.•Life Cycle- all of the stages in an organism’s life.•Pollen- a powder made by the male part of a flower or male cone.•Pollination- the process that takes place when pollen moves from the male part of a flower to the female part of a flower.•Seed- a structure that can grow into a new plant.
How do plants grow?Did you know that when you eat
corn, peas, or nuts, you are eating seeds? Seeds come in all shapes and sizes, but all have
the same function.
A seed is a structure that can grow into a new plant. It holds a
young plant that is ready to grow. This young plant is called
an embryo.
A seed has parts that help an embryo survive. It holds stored food that the embryo uses to grow. It has a tough covering that protects the embryo.
stored food
covering
Parts of a Seed
From Seed to Plant When a seed is planted in the soil, it can germinate, or begin to grow. A seed needs water, nutrients, and the
right temperature to germinate. When a seed begins to germinate, it soaks up water. That makes it swell up and break through its covering. The embryo grows out of the
seed. It grows into a small plant called a seedling. A seedling can grow into an adult plant.
http://www.youtube.com/watch?v=3nRVZPJdXOo
Parts of a Plant
Attract pollinators and make seeds that will someday grow
into new plants
Supports the plant and carries water and nutrients up and down to all parts
of the plant
Food factories! They catch energy from sunlight and use it to turn the air and
water into food
Are hidden underground but are very important to the plant. Roots hold
the plant steady in the ground, soak up water and nutrients from the soil and even store food for the future.
How do plants make seeds?A flower is a plant structure that
makes seeds. Pants that use flowers to make seeds are called
flowering plants.
Flowers make seeds. Flowers have pollen and eggs. When
pollen and an egg come together, a seed can form.
Wind may blow pollen from one flower to another. Bees can carry
pollen too. They drink a sweet liquid called nectar, from the flower. Sticky pollen clings to
their bodies. Then they carry it to different flowers.
How seeds Travel
•Planting
•Wind
•Animals