Science 3rd, unit 2 plants

Science 3rd, unit 2

SCIENCE 3rd grade

UNIT 2

Teacher: J. C. Brazo

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

Do you remember?

LIVING THINGS

All you can see on Earth can be...

NON-LIVING THINGS

types

What's the difference?...

types

Animals Plants Fungi Microorganisms

YES!

El Tomillar, J. C. Brazo

Natural Artificial They are born They grow They reproduce They die

NO!

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Science 3rd, unit 2

NOW, LET'S LEARN MORE ABOUT...

LIVING THINGS

All you can see on Earth can be...

NON-LIVING THINGS

types

types

Animals Plants Fungi Microorganisms

Natural Artificial

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

REMEMBER: All living things... are born, they grow and die But there are some differences between LIVING THINGS

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

FLOWERS

PARTS OF A PLANT LEAVES

STEM ROOTS

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

FLOWERS

LEAVES

STEM

ROOTS - Part of the plant that holds it in the soil - Absorb water and minerals

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

FLOWERS

LEAVES

STEM

- Part of the plant that grows above the ground - Supports the other parts

ROOTS

- Carries water and minerals to the leaves - Also carries sugar from the leaves to rest of the plant

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

FLOWERS

LEAVES

- Absorb energy from the sun - Takes carbon dioxide from the air

STEM

- Combine them with water and minerals to make sugars for the plant

ROOTS

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

FLOWERS - Produce seeds for the plant to reproduce

LEAVES

STEM ROOTS

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

Scientists study different varieties of Science.

Botanists are scientists too.

They are plant experts.

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

PLANTS LEAVES shapes OVAL

HEART-SHAPED

El Tomillar, J. C. Brazo

ROUNDED

SHARP

FLAT and LONG

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Science 3rd, unit 2

PHOTOSYNTHESIS The process by which

green plants produce the sugars they need to live

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

PLANTS NUTRITION PROCESS

Step 1: Water and mineral salt are absorbed from the soil through the roots XYLEM SAP is created

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

PLANTS NUTRITION PROCESS

Step 2: The xylem sap moves up the stem and branches and reaches the leaves

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

PLANTS NUTRITION PROCESS

Step 3: The xylem sap mixes with carbon dioxide and sunlight in the leaves xylem sap turns into PHLOEM SAP

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

AIR is made up of a mixture of gases PLANTS LEAVES RELEASE THIS

PLANTS LEAVES ABSORB THIS

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

PLANTS NUTRITION PROCESS

(phloem sap) R E S U M E

Su n

Xylem sap, sunlight and air form food (sugar) for the plant

(phloem sap) Nutrients move al around the plant

It reaches the LEAVES

(xylem sap) Roots absorb WATER and MINERALS Mineral salts

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

CHOROPHYLL helps the plant make it own food.

It's green, so it gives plants their green color.

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

PLANTS REPRODUCTION PROCESS most plants produce seeds SOME PLANTS USE FLOWERS

DO NOT USE FLOWERS

to produce seeds

to produce seeds

ANGIOSPERMS

GYMNOSPERMS

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

Acorns grow from seeds in the holm oak

HOLM OAKS LIFE CYCLE

After some years, the seedling grows into a tree

El Tomillar, J. C. Brazo

Acorns fall down and skirrels bury them into the soil

In spring, new seedlings begin to grow

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Science 3rd, unit 2

THE BENEFITS OF TREES absorb CARBON DIOXIDE produce OXYGEN their roots reduce effects from FLOODS and LANDSLIDES their leaves MODERATE TEMPERATURE they are the HOME for MANY ANIMALS

El Tomillar, J. C. Brazo

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Science 3rd, unit 2

SOME SIMPLE ACTIONS TO PRESERVE FORESTS...

Respect plants and animals when you go to the forest

Do not burn fires

El Tomillar, J. C. Brazo

Do not cut down trees

Paper comes from wood.

Do not waste it and reccyle

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