Q. No.Identify the incorrectly matched pair:
Alga
Sexual reproduction
I.
Ulothrix
Isogamous; non-flagellated gametes
II.
Spirogyra
Isogamous; flagellated gametes
III.
Udorina
Anisogamous
IV.
Fucus
Oogamous
1. Only III
2. I, II and III
3. Only I and II
4. Only III and IV
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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
1. I is correct; II is incorrect; III is incorrect
2. I is incorrect; II is correct; III is correct
3. I is incorrect; II is correct; III is incorrect
4. I is correct; II is incorrect; III is correct
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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.
1. Statement I is correct but Statement II is incorrect
2. Statement I is incorrect but Statement II is correct
3. Statement I and Statement II are correct
4. Statement I and Statement II are incorrect
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1. The photosynthetic pigments are located within definite chloroplasts.
2. Choloroplast are discoid in shape in all members of Chlorophyceae.
3. Most of the members have one or more storage bodies called pyrenoids, containing 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.
1. Both I and II are incorrect
2. Only I is incorrect
3. Only I is correct
4. Both I and II are correct
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1. Major pigments are chlorophyll a, c, fucoxanthin
2. Food is stored as complex carbohydrates which may be in the form of Laminarin or Mannitol
3. Vegetative cells have chitinous wall usually covered on the outside by a gelatinous coating of algin
4. Flagellar number and insertions are 2, unequal and lateral
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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. |
1. Both I and II are incorrect
2. Only I is incorrect
3. Only I is correct
4. Both I and II are correct
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