Read the following statements and choose the set of correct statements:
In the members of Phaeophyce

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Question

Read the following statements and choose the set of correct statements:
In the members of Phaeophyceae,
A. Asexual reproduction occurs usually by biflagellate zoospores.
B. Sexual reproduction is by oogamous method only.
C. Stored food is in the form of carbohydrates which is either mannitol or laminarin.
D. The major pigments found are chlorophyll a, c and carotenoids and xanthophyll.
E. Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin.
Choose the correct answer from the options given below:
(1) A, B, C and D only
(2) B, C, D and E only
(3) A, C, D and E only
(4) A, B, C and E only

Accepted Answer

Correct Answer: C — A, C, D and E onlyStep-by-step Solution:Phaeophyceae (brown algae) have the following characteristics:A: True – Asexual reproduction occurs by biflagellate zoospores (pear-shaped with two unequal flagella).B: False – Sexual reproduction can be isogamous, anisogamous, or oogamous, not only oogamous. For example, Ectocarpus shows isogamy, Fucus shows oogamy.C: True – Stored food is mannitol and laminarin (carbohydrates).D: True – Major pigments: chlorophyll a, chlorophyll c, carotenoids, and xanthophylls (fucoxanthin gives brown color).E: True – Cell wall is cellulosic with an outer gelatinous coating of algin (a polysaccharide).Thus, A, C, D, and E are correct, corresponding to option C.Key Concepts: Brown algae (Phaeophyceae): pigments, stored food, cell wall, reproduction types.

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