SEEDS

What do you think these are pictures of?

SEEDS ARE EVERYWHERE…...

Where can you find seeds?

In our foodIn our backyards

WHAT WILL THESE SEEDS BECOME?

Acorn Oak Tree

Coconut Coconut Tree

WHAT WILL THESE SEEDS BECOME?

Maple Tree

Pea Plants

Peas

WHAT IS THE FUNCTION OF A SEED?

•Nourishment: The seed provides food for the young plant while it is developing the parts it needs to make its own food.• Seed Dispersal: The design of the seed helps the seed travel to other places to germinate.

SEED DISPERSAL

YouTube - Seed Dispersal

Click below for video link

PARTS OF A SEED

Seed Coat

Cotyledon (Stored Food)[kot-l-eed-n]

Embryo (Young Plant)

Radicle

THE GERMINATION(GROWTH) OF A SEED

Click below for

video

Germination of a Seed

PART 2STRUCTURES OF

A PLANT

ROOTS

Functions Keep the plants

in place Absorbs water

and nutrients from the soil

Some roots help the plant by storing food.

TYPES OF ROOTSTaproots• Large• Grow deep into the soil.• Are able to store food.

Fibrous Roots • Thin and stringy• Lie close to the surface• Can often be found

growing side by side with taproots.

Adventitious Roots

• Strong and can be thin or thick.

• Develop to help the plant climb

• Found in ivies and vines

STEM

Functions: Supports the plant

and gives them shape.

Contain small tubes: Xylem carries water

and minerals from the roots

Phloem: carries food that is made in the leaf to the rest of the plants.

LEAVES

Where plants make their own food in a process called photosynthesis.

Many kinds of leaves Needles Broad Leaves

NEEDLES Found on most

conifers and cacti.

They do not shed their needles in the Fall.

Their shape helps prevent water loss.

BROAD LEAVES

Leaves can be found in all shapes and sizes based on their environment.

In cold climates plants shed their leaves because there is less sunlight for photosynthesis to take place and the plant needs to save its energy.

http://vimeo.com/1616728Click link to view video

Leaves are the factory of the plant where food is made in a process called photosynthesis.

WHAT IS PHOTOSYNTHESIS?

A process plants use to make their own food

Plants’ leaves contain chlorophyll

Chlorophyll (green color) makes photosynthesis possible

THE CHLOROPHYLL ABSORBS AND TRAPS THE SUNLIGHT OR ENERGY FROM THE SUN.

•THE SUNLIGHT IS COMBINED WITH WATER AND NUTRIENTS FROM THE SOIL THAT HAS BEEN ABSORBED BY THE ROOTS.

•CARBON DIOXIDE EXHALED BY ANIMALS IS ALSO ABSORBED BY THE LEAVES

Oxyg

en

Oxygen

Oxygen

When the process of photosynthesis is complete, the plant has made 2 things.:

Sugar : The food the plant has made for itselfOxygen: A waste that is released by the plant

that we need to survive.

Animals and plants need each other to survive.

•Plants give animals oxygen to breath and live. •We give plants carbon dioxide to make food.

TRANSPIRATION ALSO TAKES PLACE IN THE LEAVES OF A PLANT

What is transpiration?

Water is absorbed from the roots of a plant and travels to the leaf.

The sun heats the water in the leaf turning the water from a liquid to a gas called water vapor

The water is released into the air through tiny holes called stomata

http://www.youtube.com/watch?v=At1BJJDcXhk&feature=related

FLOWER

What is the function of the flower in a plant? Attract insects and

animals using bright colors and wonderful scents.

Produce or make the fruit and seeds of the plant

PARTS OF A FLOWER

STAMEN

The stamen is the part of the flower that makes pollen.

Pollen is fine powder needed for pollination.

PISTIL

Pistil

The pistil is made up of 3 main parts: •Stigma Collects pollen

•StyleSeparates the stigma from the ovary

•OvaryWhere the fruit/seeds form.

POLLINATION

http://videos.howstuffworks.com/hsw/9756-our-flowering-world-flower-parts-video.htm

What is pollination?

Pollination is how seeds are formed to create a new plant.

Pollination occurs when pollen from the anther on the top of the

stamen is carried to the stigma on the top of the pistil.

The pollen travels down the pistil through the style to the ovary

There the pollen fertilizes an ovule and a new fruit/seed is formed

INSECTS AND ANIMALS ARE IMPORTANT PARTICIPANTS IN POLLINATION

http://www.youtube.com/watch?v=ge3EM8AERV0

CAN YOU PUT THE PICTURES IN ORDER TO SHOW THE LIFE CYCLE OF A SEED PLANT

Teachers' Domain: Life Cycle of a Seed Plant

SOME PLANTS USE SPORES TO REPRODUCE

What are spores? Spores are tiny, seed

like spots on the underside of certain plants like ferns.

Spores contain stored food and will fall of the plant and germinate(grow)if the conditions around them are right.

THERE ARE OTHER WAYS PLANTS CAN REPRODUCE

Bulbs A type of bud that

grows underground. Tulips grow from a bulb.

Runners Some plants can grow

from the stem of an older plant. A spider plant can reproduce this way.

THERE ARE OTHER WAYS PLANTS CAN REPRODUCE

Grafting Combining two

different plants to create a new and better plant. You can attach one apple tree to the trunk of another apple tree to make a better tasting apple

THERE ARE OTHER WAYS PLANTS CAN REPRODUCE

Tubers Are swollen

underground stems.

We often eat them.

Tubers develop “eyes” that will develop into a new plant.

SOME REVIEW AND ASSESSMENT TOOLS

http://www.ngfl-cymru.org.uk/vtc/plant_repro/eng/Introduction/activity1pop.htm Flower parts and reproduction.

Starter activity Crickweb | KS1 Science