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

Which of the following is an incorrect characteristic of brown algae?

Which of the following is an exception in terms of its life cycle?

$A.$ Algae are known as primitive plants.
$R.$ The body structure of algae is simple.

Hydrocolloid carrageen is obtained from:

Assertion : Volvox,Ulothrix,Spirogyra and Chara are members of Chlorophyceae.
Reason : Usually they have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose.