The plant body having holdfast,stipe and frond is a characteristic of

Hydrocolloid carrageen is obtained from:

If you are asked to classify different algae into distinct groups,which of the following characteristics would you choose?

In $Spirogyra$,gametes are:

In algae,asexual reproduction occurs by the production of different types of spores. The most common type of spore is

Sexual reproduction in $Spirogyra$ involves the fusion of: