10 Questions
What is the primary function of photosynthesis?
To convert sunlight into potential energy
Which of the following is NOT a requirement for photosynthesis?
Oxygen
What is the function of chlorophyll in photosynthesis?
Absorb radiant energy from the sun
Where do plants primarily absorb carbon dioxide from for photosynthesis?
From the atmosphere through stomata
Which of the following life processes is NOT directly related to photosynthesis?
Movement
What is the role of guard cells in plants?
Surround stomata and control their opening and closing
What is the main product of photosynthesis?
Glucose
What happens to the oxygen produced during photosynthesis?
It is released into the atmosphere
Which pigment is responsible for the green color of plants?
Chlorophyll
Where is chlorophyll specifically located within plant cells?
In the chloroplasts
Study Notes
7 Life Processes
- Living organisms perform 7 essential life processes: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, and Nutrition.
Photosynthesis
- Definition: Chemical reaction converting sunlight into potential energy, stored as sugars (glucose to starch), releasing oxygen.
- Requirements:
- Water (H2O): Absorbed by plant roots from soil, a reactant in the chemical reaction.
- Carbon Dioxide (CO2): Absorbed by plants from the atmosphere, primarily through stomata (tiny pores) on leaf undersurfaces.
- Sunlight (Radiant Energy): Provided by the sun, converted into potential energy during photosynthesis.
- Chlorophyll: A green pigment in chloroplasts, absorbs radiant energy from the sun.
Stomata
- Pores in leaves, mostly on the undersurface, surrounded by guard cells that change shape to open or close stomata.
Test your knowledge on the 7 life processes that all living organisms carry out, including photosynthesis which is the process of converting sunlight into energy and releasing oxygen. Learn about the water molecule and its composition.
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