Question

Which of the following is commonly present in fresh water?
(A)- Ulothrix
(B)- Spirogyra
(C)- Ectocarpus
(D)- Batrachospermum

• A. A and B
• B. A,B and D
• C. A,B,C and D
• D. A,B and C

Answer 1

The correct option is B A,B and D

Algae are the group of thallophytes, they are carriers of chlorophyll and have simple body structure. There are a few examples given, they are:

• Ulothrix - They are green, filamentous algae, mostly found in freshwater with low salinity areas like; ponds, lakes etc.
• Spirogyra - They belong to the largest group of green algae and are commonly found in freshwater bodies like; deep ponds, rivers etc.
• Ectocarpus - They belong to the group of brown algae and mostly found in the colder wetlands. They are commonly found in marine water bodies.
• Batrachospermum - They are from the group of red algae, most of the members of red algae are found in marine water but few are found in fresh water. E.g.; Batrachospermum.

So, the correct option is 'Ulothrix, Spirogyra, and Batrachospermum'