Photosynthesis lesson

Photosynthesis

​Definition of Photosynthesis

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

1 Product of photosynthesis

​Glucose

Glucose is used by plants for energy and to make other substances like cellulose and starch.

1 Product of Photosynthesis

​Oxygen

Oxygen generates ATP and NADPH—the energy source and reducing power for plant metabolism.

Multiple Choice

How does Chlorophyll make most plants green?

• it does not absorb violet light

• it absorbs green light

• it reflects green light

• it absorbs violet light

Multiple Select

What are the two products of photosynthesis?

• Oxygen

• Carbon dioxide

• Glucose

• Animals

Photosynthesis Equation

Where does photosynthesis occur

photosynthesis occurs in a specialized intracellular organelle—the chloroplast. Chloroplasts perform photosynthesis during the daylight hours.

How does the Chloroplast work in photosynthesis?

Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process.

Why does Photosynthesis happen?

the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.

How does photosynthesis relate to humans?

Humans depend on photosynthesis to make the food they consume, as a source of energy to produce heat, light, and electricity, on a daily basis.

Multiple Choice

Which is the correct equation for Photosynthesis?

• 6CO₂ + 6H₂O --> 6O₂ + C₆H₁₂O₆

• 6CO₂ + C₆H₁₂O₆ + 6H₂O --> O₂ 

• 6O₂ + 6H₂O --> 6CO₂ + C₆H₁₂O₆

• C₆H₁₂O₆ + 6O₂ ---> 6H₂O + 6CO₂

Multiple Choice

What sentence is right about Photosynthesis?

• Plants get energy they need for photosynthesis from water

• Plants get energy they need for photosynthesis from sunlight

• Plants don't need energy to perform photosynthesis

• Plants get energy they need for photosynthesis from soil

Multiple Choice

The main energy source for all life is?

• Earth

• Batterys

• Soil

• The sun

Multiple Select

Which organisms can perform Photosynthesis?

• Plants

• Animals

• Some bacteria

• Algae