Algae: Simple Photosynthetic Organisms

Algae are simple organisms without complex structures like roots, stems, or leaves. They are diverse, existing as single-celled or multicellular forms. Algae play a crucial role in producing Earth's oxygen and form the base of aquatic food chains. Additionally, they are significant for industrial applications, including the production of petroleum products.

What complex features do algae lack?

• Bark and branches

• Thorns and tendrils

• Roots, stems, and leaves

• Flowers and fruits

How can algae be classified based on their cellular structure?

• Neither single-celled nor multicellular

• Both single-celled and multicellular

• Only single-celled

• Only multicellular

What is one of the primary roles of algae in the environment?

• Producing carbon dioxide

• Providing shelter for land animals

• Generating much of Earth's oxygen

• Absorbing sunlight for warmth

Which of the following is NOT a role of algae?

• Foundation of aquatic food chains

• Source of industrial products

• Main source of Earth's freshwater

• Producer of oxygen

What type of products can be derived from algae?

• Metal products

• Textile products

• Petroleum products

• Wood products