Transcript LOOKING AT PLANTS AND ANIMALS

LOOKING AT PLANTS AND
ANIMALS
LIFE SCIENCE
Third Grade
Vocabulary Preview
organism,A6
reproduction,A7
environment,A8
respond,A8
cell,A10
mineral,A16
root,A17
stem,A17
leaf,A18
energy,A18
oxygen,A19
life cycle,A26
embryo,A26
heredity,A27
flowering plant,A28
conifer,A28
FEATURES OF LIVING
THINGS
• Grow and change
• Reproduce
Smaller Parts of Living Things
Plant Cells
1. Cell
membrane
2. Nucleus
3. Cytoplasm
4. Cell wall
5. chloroplast
Animal Cells
1. Nucleus
2. Cytoplasm
3. Cell
membrane
The Needs of Plants
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Review
Vocabulary Mineral, A16
Root,A17
Stem,A17
Leaf,A18
Energy,A18
Oxygen,A19
Basic Needs
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Minerals
Sunlight
Water
Air
leaves
stems
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roots
Why Does A Plant Need Leaves?
1.
2.
3.
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7.
Leaves are the main food-making part of the plant.
Leaves take in sunlight.
Leaves are green because of chlorophyll.
Chlorophyll traps the energy in sunlight for the plant.
Leaves also help the plant get the air it needs.
It uses carbon dioxide from air.
The plant uses the Sun’s energy to combine carbon dioxide
and water to make food.
8. Plants use food to stay alive and give off oxygen.
How Do Plants Respond To Their
Environment?
One way plants respond
is by growing toward the
sunlight.
Trees respond to cooler
weather when their leaves
turn color.
Why It Matters
We depend on plants for food. We eat the roots,
Stems, and leaves of plants. The cereals we eat
Are made from plants. We eat animals that eat
Plants. However, people need plants for more
Than food. We also breathe the oxygen that plant
Leaves make.
The Life Cycle of a Plant
Vocabulary Preview
1.
2.
3.
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5.
Life cycle,A26
Embryo,A26
Heredity,A27
Flowering plant,A28
Conifer,A28
How Does a Plant’s Life Begin?
A seed begins a plant’s life cycle. A plant
begins life, grows, develops, reproduces,
and dies.
Think
On a cold day, you might see icicles that have grown
from the roof of a building. Does this mean icicles are
living? Explain.