Algae Functions and Characteristics

The video introduces algae, explaining their characteristics, types, and significance. It covers macroalgae and microalgae, detailing their structures and roles in ecosystems. The video also discusses algal blooms and the benefits of algae to the environment and humans.

What process do algae use to produce their own food?

• Respiration

• Photosynthesis

• Fermentation

• Digestion

Which type of algae is commonly known as kelp?

• Blue-green algae

• Brown algae

• Red algae

• Green algae

Which type of algae is often used in Japanese cuisine?

• Kelp

• Nori

• Spirulina

• Chlorella

What is the primary role of the holdfast in macroalgae?

• Absorb nutrients

• Reproduce

• Provide support

• Photosynthesize

What is the main difference between macroalgae and microalgae?

• Macroalgae are single-celled

• Microalgae are multicellular

• Microalgae are found on land

• Macroalgae are multicellular

What is the function of air bladders in macroalgae?

• To absorb nutrients

• To store food

• To anchor the algae

• To help the algae float

What are microalgae commonly referred to as?

• Coral

• Seaweed

• Phytoplankton

• Zooplankton

Which of the following is a characteristic of diatoms?

• They have flagella

• They are multicellular

• They are found only in freshwater

• They contain oil for movement

What is a potential negative impact of algal blooms?

• Increase in fish population

• Improvement in water clarity

• Reduction in water oxygen levels

• Increase in water temperature

How do algal blooms affect tourism?

• They attract more tourists

• They improve water quality

• They increase fish visibility

• They discourage swimming