The brown colour of some algae is due to the presence of pigments:

The red colour of 'Red Sea' is due to which of the following algae?

Match the following columns:

Column-$I$	Column-$II$
$P$. Chlorophyceae	$I$. $2$, unequal lateral flagella
$Q$. Phaeophyceae	$II$. Flagella absent
$R$. Rhodophyceae	$III$. $2-8$, equal apical flagella

In $Ulothrix$ / $Spirogyra$,the reduction division (meiosis) occurs at the time of:

Which group of plants lacks differentiated organs such as roots,stems,and leaves?

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: