Gametangia and sporangia are non-jacketed and unicellular in:

Members of class Rhodophyceae mostly found in:

An alga which can be employed as food for human being is:

Polysulphate ester is present in the cell wall of

The algae which are mostly found in marine habitats with abundance in the warmer region

(a) Possess chlorophyll a and d

(b) Show isogamous sexual reproduction

(c) Do not show post-fertilization development

(d) Are characterized by absence of motile spores and gametes

**Formatting error was changed for question and options.**

Select the pair which is incorrectly matched.

Match the following (Column I with Column II).

(i) Unbranched filamentous body structure

(ii) Non-motile isogametes

Both the above features are present in