Assertion : Ectocarpus is a brown alga.Reason : Ectocarpus has a pigment fucoxanthin in higher amounts, reserve food as laminarin and mannitol and chlorophylls a and c.

Ectocarpus is a brown alga or phaeophyceae member. It is becausea. has fucoxanthin in higher amounts that imparts brown color.b. has chlorophyll a and c.c. reserve food is laminarin or mannitol (complex carbohydrates).d. zoospores and gametes are pyriform with two unequal lateral flagella.