Algae

Question 1

What type of algae is commonly referred as cyanobacteria?

Answer 1

Blue-green algae

Question 2

Give 5 economic importance of algae

Answer 2

• Sea weeds are used as food and in coastal areas and cosmetic industry.
• Sea weeds have nutritional value ; high concentrations of iodine.
• Algae are used as fodders
• Red algae is used to develop cancerous exoskeleton
• Seawage treatment
• Filtration and absorption of materials ?

Question 3

Gracillaria in Asia are collected and used in making agar.Why is agar important?

Question 4

What are the benefits of diatoms as algae?

Question 5

What are some negative effects of algae?

Answer 5

• Animal poisoning have been caused by bloom forming blue-green algae like …
• The blooms may be toxic to the aquatic organisms wand may cause death to fishes and invertebrate organisms
• When taken toxic plankton algae like Anabaena and Microcystis cause gastric problems
• Gym

Question 6

Economic importance of algae to :
i) Food industry
ii) Ecological importance
iii) Processing and manufacturing industries
iv) Farming
v) Environment

Question 7

Economic importance of algae to :
i) Food industry
ii) Ecological importance
iii) Processing and manufacturing industries
iv) Farming
v) Absorption…