2024 Biological ClassificationCharacteristic Features of Phaeophyceae (Brown Algae) Medium Question 11 of 117 in Biological Classification

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 front the options given below:

A A, C, D and E only
B A, B, C and E only
C A, B, C and D only
D B, C, D and E only

The answer is A.

Solution

A. Asexual reproduction in Phaeophyceae is usually by biflagellate zoospores – correct. B. Sexual reproduction may be isogamous, anisogamous or oogamous, not oogamous only – incorrect. C. Stored food is complex carbohydrates – mannitol or laminarin – correct. D. Major pigments are chlorophyll a, c, carotenoids and xanthophylls (fucoxanthin) – correct. E. Vegetative cells have a cellulosic wall usually covered on the outside by a gelatinous coating of algin – correct. So A, C, D and E only are correct.

Concept Reproduction, storage, and pigments of brown algae

Biological Classification in past papers

117 questions from this chapter have appeared across 26 exam years.