6th gr. cmk How and Why Plants Make Food

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All living things, including plants, need food to give them ___________?

ENERGY

What does energy do for plants?

energy fuels life processes and materials (molecules) to build and repair their bodies

How do plants make food?

Through a process called PHOTOSYNTHESIS

What is needed for photosynthesis?

1. H2O (water)
2. CO2 (carbon dioxide)
3. light (sun)

What is made by photosynthesis?

1. Sugar (glucose)
2. O2 (oxygen)

Here is a summary of photosynthesis

Water (H2O) + Carbon dioxide (CO2) + Sunlight = Sugar + Oxygen (O2)

What do plants do with the food they make?

1. Store it (as fats, carbohydrates, proteins)
2. Use it (for energy and materials for life)

How do plants (and other organizms) use food?

Through a process called CELLULAR RESPIRATION

What is needed for cellualr respiration?

1. Sugar (glucose)
??? 2. O2 (oxygen) ????

What is made by cellular respiration?

1. H2O (water)
???? 2. CO2 (carbon dioxide) and Chemical energy for life is released (not "made")

Here is a summary of cellular respiration

Sugar + Oxygen = Water + Carbon Dioxide+ Energy for life

Plant bodies have special structures to help them with photosynthesis and cellular respiration, These include:

1. Stomates
2. Xylem
3. Phloem
4. Roots
5. Chloroplasts
6. Mitochondria (these are in plants AND animals)

Stomates: What they do and where they are found

What do: Let CO2 in, let O2 and H2O out
Where found: Mainly on leaves, they look like small mouths

Xylem: What it does and where found

What do: Carries H2O around the plant
Where: Thin tube that runs through the plant from roots through stem to leaves

Phloem: What it does and where found

What do: Carries sugar
Where: Thin tube that runs throughout the plant

Roots: What does and Where found

What do: Take in water and nutrients and attach plant to the ground
Where: Underground

Chloroplasts: What is does and where found

What do: Photosynthesis happens here
Where: In the cytoplasm of leaves and other green plant cells

Mitochondria (these are in plants AND animals)

What do: Cellular respiration happens here
Where: All plant and animal cells

Transpiration

Energy from the sun causes water molecules to evaporate out of the stomate. As a water molecule leaves, it pulls on the molecule behind it. The pull continues all the way down the plant and into the the roots, bringing more water into the plant.

Transpiration:
_____ from the sun causes water molecules to evaporate out of the ____________

Energy
Stomate

The pull on water molecules in transpiration continues all the way down the plant and into the ____, bringing more water into the ______

Roots
Plant

Water molecules attract each other because they are______

Polar

Polar

have one positive side and one negative side

What surrounds the stomate?

gaurd cells

Veins have what in them?

xylem and phloem

Leaf cells contain ______.

Chloroplasts

Chloroplasts have _____ to trap energy from the sun?

Chlorophyl

Chlorophyl traps _____ from the sun.

energy

The trunk of the tree includes ____ & ____ to carry water and sugar/food

xylem
phloem

Xylem and phloem in a tree trunk carry _____ & ____

water
sugar/food

Root hairs do what?

Absorb water and nutrients

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