Question

Sea weeds belongs to
A. Red algae
B. Brown algae
C. Green algae
D. Blue green algae

Answer 1

Hint: Seaweed, or microalgae, belongs to thousands of varieties of multicellular, macroscopic, aquatic algae. The term covers some kinds of Phaeophyta, Rhodophyta and Chlorophyta macroalgae.

Complete Answer:
Let us analyse the given options to find out the correct answer.
Option A: The scientific term of Red Algae is Rhodophyta and they belong to Class Rhodophyceae. Therefore this is an incorrect option.

Option B: Seaweeds refers to brown algae. The abundant range of brown algae with its accompanying plentiful animal life is kelp shelters which are seen in warm water. Some of the most popular brown algae of the Indian coast are Turbinaria, Sargassum, Padina, and Dictyota. Therefore, this is the correct option.

Option C: The green seaweeds are a large, natural groups of algae including Chlorophyta and Streptophyta/Charophyta, which are now seen in separate parts, collectively with the more basal Chlorophyceae, Eustigmatophyceae and Spirotaenia. Therefore, this is the incorrect option.

Option D: True bacteria belong to blue-green algae. Blue-green seaweeds are varieties of bacteria identified as Cyanobacteria. They usually look green and sometimes may become bluish when residues are dying. Therefore, this is an incorrect option.

Thus, option B) Brown algae is the correct answer.

Note: Brown algae consists of several edible algae. All brown algae have alginic acid in their cell surfaces, which is obtained commercially and utilised as an automated thickening factor in food and for other applications.