I: | Algin is a hydrocolloid derived from brown algae |
II: | Carrageen is a hydrocolloid derived from green algae |
III: | Agar is a complex polysaccharide derived from red algae, Gelidium and Gracilaria |
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Which of the following is not an example of an edible alga?
1. | Porphyra | 2. | Laminaria |
3. | Sargassum | 4. | Amanita |
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Statement I: | It is single-celled green algae. |
Statement II: | It is used as a food supplement. |
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1. | The photosynthetic pigments are located within definite chloroplasts. |
2. | Chloroplasts are discoid in shape in all members of chlorophyceae. |
3. | Most of the members have one or more storage bodies called pyrenoids, which contain proteins besides starch, located in the chloroplasts. |
4. | Some green algae may store food in the form of oil droplets. |
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Column I | Column II | |
1. | Main photosynthetic pigment | Chlorophyll a, b |
2. | Cell wall | Inner layer of cellulose and outer layer of pectose |
3. | Stored food | Starch |
4. | Flagellar number and insertion | 2-8. unequal. basal |
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All the following are examples of members of Chlorophyceae except:
1. Ectocarpus | 2. Chlamydomanas |
3. Chara | 4. Ulothrix |
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I: | Ectocarpus is profusely branched and may reach a height of 100 meters. |
II: | Kelps are simple branched filamentous brown algae. |
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I. | Asexual reproduction is by biflagellate zoospores that are pear shaped and have two unequal and laterally attached flagella. |
II. | The gametes are pyriform [pear shaped] and bear two laterally attached flagella. |
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1. | Frond | 2. | Stipe |
3. | Holdfast | 4. | Rhizoid |
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