How do I Live?

Life Processes of Plants

Objectives of Todays Lesson

• explanation of the process of photosynthesis using the formula for photosynthesis

• explanation of the process of respiration using the formula for respiration

• identification of the chemical compounds involved in photosynthesis and respiration

• explanation of the importance of photosynthesis and respiration to both plant and animal life.

SOLs Covered In Today’s Lesson• English• 7.6• The student will read and demonstrate comprehension

of a variety of nonfiction texts.• Use prior and background knowledge as a context for

new learning.• Use text structures to aid comprehension.• Identify an author’s organizational pattern, using

textual clues, such as transitional words and phrases.• Draw conclusions and make inferences about explicit

and implied information.• Differentiate between fact and opinion.• Identify the source, viewpoint, and purpose of a text.• Describe how word choice and language structure

convey an author’s viewpoint.• Identify the main idea.• Summarize text identifying supporting details.• Identify cause-and-effect relationships.• Organize and synthesize information for use in written

formats.• Use reading strategies to monitor comprehension

throughout the reading process.

• Mathematics• 7.4• The student will solve single-step and multistep practical

problems, using proportional reasoning.

• Science• LS.3• The student will investigate and understand that living

things show patterns of cellular organization. Key concepts include

• cells, tissues, organs, and systems; and• patterns of cellular organization and their relationship to

life processes in living things.• LS.5• The student will investigate and understand the basic

physical and chemical processes of photosynthesis and its importance to plant and animal life. Key concepts include

• energy transfer between sunlight and chlorophyll;• transformation of water and carbon dioxide into sugar

and oxygen; and• photosynthesis as the foundation of virtually all food

webs.

What is the definition of photosynthesis?

• Photosynthesis is a chemical change that produces food in green plants.

• During photosynthesis, carbon dioxide, gas, and water are combined to produce sugar.

• Sunlight supplies the energy for the chemical change.

What elements are necessary for photosynthesis?

• CO2 = carbon dioxide• H2O = water• light = sunlight• chlorophyll = green in plants• C6H12O6 = sugar (glucose)• O2 = oxygen

• Why is photosynthesis important?– It is the most important chemical process in the

atmosphere.– It allows plants to make their own food.– It provides oxygen for animals.– It makes complex sugars, starches, fats, and

proteins.

What is the equation for photosynthesis?

What is the definition of respiration?

• Respiration is a process by which living cells take in oxygen and give off carbon dioxide.

When does respiration occur?

• Respiration occurs during both day and night.

What is the formula for respiration?

• C6H12O6 + 6O2 6CO2 + 6H2 O + heat

Why is respiration important?

• Respiration uses the sugars and starches produced by photosynthesis and converts them into energy.

Review

• What is photosynthesis?• What is respiration?• How are the life processes of plants similar to

animals? • What makes respiration in plants different

from the same process in animals?