PHOTOSYNTHESIS

What is it??Why do we need it??

By: Shyla Turner *** Instructional Technology TR 9:30-10:45***

Photosynthesis

• A process that converts carbon dioxide into organic compounds

In other words:

• The chemical process by which plants capture sunlight and use it to convert carbon dioxide

and water into food.

What uses photosynthesis??

• Green plants – Flowers – Trees– Some algea– A few various forms of bacteria

**Mostly flowers and trees**

Most essential components of photosynthesis:

• These include:– Direct sunlight– Water– Carbon dioxide – Chlorophyll

Who benefits from photosynthesis?

• The plants/algea/bacteria

• Other living beings such as animals

• Even humans!!

Parts of Photosynthesis

Stomates• Microscopic hole in the stem and leaves

of plants

• This is where carbon dioxide enters the plant

At the same time, water is

entering the plant through

the roots.

After being absorbed by the roots:

The water travels all the way through the stem to reach

the leaves.

Chlorophyll

• Contained in the plant

• This is what makes the green color

What does chlorophyll do besides make the plant green??

When sunlight falls on the plant, the chlorophyll

captures the energy in it, and stores it for further

use.

This energy is eventually

used to convert water into

hydrogen and oxygen.

This is combined with the carbon dioxide to produce the food for the

plant

Hydrogen

The oxygen is let out through the stomates

OXYGEN

*Hydrogen is used to produce food

*Oxygen is let out as waste product

Photosynthesis is important

in the respiration of humans

and animals

We use the oxygen produced by this to fulfill our oxygen intake to live.

• Proteins

• Fats

• Water soluble sugars

Photosynthesis also produces:

WE DEPEND ON PLANTS (OR ANIMALS THAT FEED ON PLANTS) TO GET THESE BECAUSE OUR BODIES

CANNOT PRODUCE THESE NUTRIENTS ON THEIR OWN

Photosynthesis plays a vital role in regulating the life

cycle on earth!

Sunlight, water, and the plants work together to supply the raw

source of energy to us and help us breathe in oxygen to live on.

Life without photosynthesis would

be impossible!!!