Question

Which of the following is not a feature of those groups of algae to which giant algae such as kelps belong?

(1) Presence of chlorophyll a and c as major photosynthetic pigments

(2) Cell wall is covered outside with a gelatinous hydrocolloid material

(3) Absence of motile cells in the life cycle

(4) Food is stored in the form of laminarin and mannitol​

Answer 1

$\huge\red{Hey Mate}$

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Kelp belongs to brown algae groups.

So characteristics of brown algae are :

• Chlorophyll a and c are major photosynthetic pigments.
• Cell wall is covered with gelatinous coating of algin which is a hydrocolloid material.
• Its gametes are biflagellate and thus they are motile
• Food is stored in the form of laminarin and mannitol.

So the third option doesn't match to the given characteristics and hence Option 3 is the answer.

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Hope this helped !!