In which of the following groups is the embryo absent?

Physiological anisogamous sexual reproduction is found in

What is the stored food (nutrient) in algae?

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

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

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 $Laminaria$?