Which algal division is characterized by the presence of a 'peculiar' type of nuclear division and the absence of flagellated stages in its life cycle?
Chlorophyta
Phaeophyta
Rhodophyta
Xanthophyta
Related Questions
Which of the following pigments are NOT found in Phaeophyceae?
Chlorophyll a and c
Carotenoids and xanthophylls
Chlorophyll b and d
Chlorophyll a and carotenoids
Which of the following statements are TRUE regarding the characteristics of Phaeophyceae?
(i) They reproduce asexually by biflagellate zoospores.
(ii) Their main photosynthetic pigments are chlorophyll a, c, carotenoids, and xanthophylls.
(iii) Their cell walls are composed of cellulose and algin.
(iv) They store food as mannitol, laminarin, and starch.
(i) and (ii) only
(i), (ii) and (iii)
(ii), (iii) and (iv)
(i), (ii), (iii) and (iv)
Members of Phaeophyceae store their food in the form of:
Starch and cellulose
Mannitol and laminarin
Glucose and fructose
Floridean starch and glycogen
Consider the following statements regarding the major pigments and stored food in the different groups of algae and select the correct options given.I. In Chlorophyceae, the stored food material is starch and the major pigments are chlorophyll-a and d.II. In Phaeophyceae, laminarian is the stored food and major pigments are chlorophyll-a and b.III. In Rhodophyceae, floridean starch is the stored food and major pigments are chlorophylla-a,d and phycoerythrin.
I is correct, but II and III are incorrect
I and II are correct, but III is incorrect
I and III are correct, but II is incorrect
III is correct, but I and II are incorrect
The stored food material in Phaeophyceae is:
Starch
Mannitol and Laminarin
Floridean Starch
Paramylon
Which type of sexual reproduction is observed in Phaeophyceae?
Isogamous only
Anisogamous only
Oogamous only
Isogamous, anisogamous or oogamous
In addition to mannitol, which other carbohydrate serves as a reserve food material in some brown algae?
Starch
Laminarin
Floridean starch
Paramylon
The cell wall of Phaeophyceae is primarily composed of cellulose and coated with:
Chitin
Pectin
Algin
Lignin
Which of the following algae stores mannitol as its primary reserve food material?
Ectocarpus
Laminarin
Fucus
Gracilaria
Which carbohydrate serves as the reserve food material in brown algae like Fucus?
Mannitol
Starch
Floridean starch
Paramylon