Non-motile gametes are found in .......

Consider the following statements:
$I.$ In red algae,vegetative reproduction takes place by fragmentation.
$II.$ In red algae,the food is stored as floridean starch,which is very similar to amylopectin and glycogen in structure.
$III.$ The cell wall of red algae consists of chitin.
Which of the statements given above are correct?

Autotrophic thallophytes are called .........

Sexual reproduction in algae results in the formation of

An example of a colonial alga is

If you are asked to classify the various algae into distinct groups,which of the following characters should you choose?