Plants, Transpiration, Photosynthesis and Respiration

VocabularyTier 2: distinction, consume, complementary, processes, energy, products, guard,

regulateTier 3: organism, photosynthesis, respiration, glucose, carbon dioxide, oxygen,

chlorophyll, epidermis, cuticle, stomata, guard cells, transpiration

Parts of a Flower Review

YOU MUST KNOW THESE PARTS & FUNCTIONS1. Stamen2. Stigma3. Ovary4. Petals-bright and odor5. Pistil6. Anther7. Ovule8. Pollen grains 9. Sepals

Interactive Parts of the Flower http://www.bbc.co.uk/schools/scienceclips/ages/9_10/life_cycles.shtml

Today’s Learning Goals Transpiration(water loss through stomata) regulated by the

guard cells through their opining/closing Leaves have epidermis with cuticles and stomata to prevent

water loss; guard cells control the opening of the stomata In plants, chlorophyll (found in chloroplasts) captures

energy from the sun in order to make food during photosynthesis

Photosynthesis and cellular respiration are complementary processes:

Plants carry on photosynthesis/respiration where food is broken down into energy Plants make their own food through photosynthesis, animals

consume energy rich food

Transpiration

Brain Pophttp://www.brainpop.com/science/cellularlifeandgenetics/plantgrowth/

TranspirationCritical Thinking:1. Do you think plants would lose more water to

transpiration in windy conditions or non-windy conditions?

2. Do you think plants would lose more water to transpiration in humid conditions or dry conditions? Why?

3. Explain how plant transpiration contributes to the water cycle.

4. Where on Earth would you find the most transpiration? Why? Do you think this has an effect on climate?

5. What would be the effect if humans were to plant a huge number of leafy trees in one county of North Carolina. They would plant so many there they would cover the land. Do you think conditions there would be different? Why or why not?

Transpiration—stoma are small openings on the underside of leaves which are used for gas exchange, (O2 & CO2). Guard cells on each side help open & close stoma. Plants also lose water through the stoma. So, stoma are usually closed during the hottest part of the day so they don’t lose so much water. Plants only use about 10% of the water they absorb from the Earth. The rest is released into the atmosphere through transpiration.

PhotosynthesisMedia Clips

Discovery Education Video Photosynthesis

Brain pop Photosynthesis

How Does a Plant Make It’s Own Food?

Plants use carbon dioxide (CO2), water (H2O), and sun’s energy to make food.

This is called “photosynthesis” The food gives plants energy Animals get the

energy stored in plants when they eat them.

How Do Plants Get Energy From Sun? Plants have pigments that

absorb energy from light Chlorophyll (found in

chloroplasts) is the pigment used in photosynthesis

What “Food” do Plants Make? The “food” plants

make is a sugar called glucose (C6H12O6).

Glucose and oxygen (O2) are made during photosynthesis.

How Do Organisms Get Energy From Food?

Animals cannot make their own food like plants can. But, BOTH plants and animals must break down

(digest) food in order to get energy from it (so they can live, grow, & develop)

Cells do this 2 ways: cellular respiration and fermentation

Check It Out! Did you notice

that cellular respiration is just the opposite of photosynthesis?

Photosynthesis Rap

Photosynthesis Song

Today’s Learning Goals Transpiration(water loss through stomata) regulated by the guard cells

through their opining/closing

Leaves have epidermis with cuticles and stomata to prevent water loss; guard cells control the opening of the stomata

In plants, chlorophyll (found in chloroplasts) captures energy from the sun in order to make food during photosynthesis

Photosynthesis and cellular respiration are complementary processes: Plants carry on photosynthesis/respiration where food is broken down

into energy

Plants make their own food through photosynthesis, animals consume energy rich food

Photosynthesis and Respiration in Aquatic Plants

1. Read and annotate the Photosynthesis and Respiration article

http://www.aquariumlife.net/articles/aquatic-plants/pjotosynthesis-respiration-aquatic-plants/152.asp

2. Use the information from the article to Explain why it is important for an aquarium owner to be very careful in how s/he sets up his or her aquarium.