Which of the statements about brown algae are true They are

Which of the statements about brown algae are true? They are all multicellular. They are found mostly in lakes and ponds. They are photosynthetic protists. They are commonly called seaweed. They are known as phytoplankton

Solution

Option 1,3 and 4 are correct.

Brown algae are marine and multicellular algae hence option 1 is correct.

Brown algae are mostly found in seashore not in lakes and pond hence option 2 is not correct.

Brown algae contain photosynthetic pigment chlorophyll hence option 3 is correct.

Brown algaes are part of seaweed hence the option 4 is correct.

Brown algaes are nor a part of phytoplankton, hence option 5 is not correct.