The chloroplast in $Spirogyra$ is

Zygotic meiosis is a characteristic of .......

Sexual reproduction in $Spirogyra$ involves the fusion of:

Which of the following is a method of sexual reproduction in algae?

Some characters of algae are given below:
$a.$ Floridean starch
$b.$ Sulphated phycocolloids in cell wall
$c.$ Alginic acid
$d.$ Trumpet hypha
$e.$ Haplodiplontic life cycle
$f.$ Isomorphic alternation of generation
$g.$ Fucoxanthin
$h.$ Phycoerythrin
$i.$ Zygotic meiosis
$j.$ Two anterior flagella
Which of the given set of characters belongs to $Laminaria$?

In Rhodophyceae,stored food is available as: