Which one of the following shows isogamy with non-flagellated gametes?

Read the following statements and identify the characters related to the alga shown in the diagram:
$(a)$ It is a member of Chlorophyceae
$(b)$ Food is stored in the form of starch
$(c)$ It is a monoecious plant showing oogonium and antheridium
$(d)$ Food is stored in the form of laminarin or mannitol
$(e)$ It shows dominance of pigments chlorophyll $a, c$ and Fucoxanthin.
Choose the correct answer from the options given below:

The cell wall of algae is composed of which of the following substances?

In which of the following plants is the sporophytic generation represented only by the zygote?

The cell wall of algae is composed of:

Cells of $Ulothrix$ are