Question

Some characters of algae are given below
A. Floridean starch
B. Sulphated phycocolloids in cell wall
C. Alginic acid
D. Trumpet hypha
E. Haplo-diplontic life cycle
F. Isomorphic alternation of generation
G. Fucoxanthin
H. Phycoerythrin
I. Zygotic meiosis
Which of the given set of characters belongs to Laminaria?

• A. A, B, E, F, H
• B. C, D, E, F, G, I
• C. C, D, E, G
• D. B, C, D, E, F, G, I

Answer 1

The correct option is C C, D, E, G

Laminaria are brown algae. Characteriatic features of brown algae include
(i) Alginic acid in the cell walls
(ii) Trumpet hyphae or the conducting cells that resemble sieve tubes of higher plants.
(iii) Haplo-diplontic life cycle
(iv) Fucoxanthin as the accessory pigment in the chloroplasts.

Floridean starch is the storage polysacharide present in red algae.
Sulphated phycocolloids like agar and carrageenin are present in the cell walls of red algae.
Brown algae exhibit heteromorphic alternation of generations, with distinct haploid and diploid generations.
Phycoerythrin is an accessory pigment present in red algae.
Zygotic meisis is seen in single celled algae like chlamydomonas.