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Q. No.Gymnosperms lack:
1.
Secondary growth
2.
Vessels in their xylem
3.
Albuminous cells
4.
A dominant sporophyte
Subtopic: Gymnosperms |
85%
Level 1: 80%+
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Which of the following pteridophytes does not belong to the same class as the other three?
| 1. | Dryopteris | 2. | Pteris |
| 3. | Adiantum | 4. | Equisetum |
Subtopic: Classification of Pteridophytes |
86%
Level 1: 80%+
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Given below are two statements:
| Statement I: | Chlorella is used as food supplement by space travellers |
| Statement II: | Chlorella is a unicellular algae |
| 1. | Both I and II are true and II correctly explains I |
| 2. | I is true and II is false |
| 3. | Both I and II are true but II does not explain I |
| 4. | Both I and II are false |
Subtopic: Algae |
78%
Level 2: 60%+
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Identify the incorrect statement regarding classification of plants given by George Bentham and Joseph Dalton Hooker:
| 1. | It is a natural system of classification. |
| 2. | It totally disregarded the external characters and did not include them to classify plants. |
| 3. | It used internal features like structure, anatomy, embryology and phytochemistry. |
| 4. | It was based on natural affinities among the organisms. |
Subtopic: Classification System: II |
80%
Level 1: 80%+
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All the following are examples of members of Chlorophyceae except:
1. Ectocarpus
2. Chlamydomanas
3. Chara
4. Ulothrix
1. Ectocarpus
2. Chlamydomanas
3. Chara
4. Ulothrix
Subtopic: Chlorophyceae: Green Algae: II |
92%
Level 1: 80%+
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All the following statements will be true for brown algae except:
| 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 |
Subtopic: Pheophyceae: Brown Algae |
75%
Level 2: 60%+
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Subtopic: Pheophyceae: Brown Algae |
85%
Level 1: 80%+
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Consider the given statements regarding certain pteridophytes:
| Statement I: | In Selaginella and Equisetum, sporophylls may form distinct compact structures called strobili or cones. |
| Statement II: | Selaginella and Salvinia are heterosporous. |
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
Subtopic: Pteridophytes: Heterospory |
89%
Level 1: 80%+
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Select the option where the given characters are correct match for members of Rhodophyceae:
| Major pigments | Stored food | Cell wall | Flagella | |
| 1. | Chlorophyll a, d; phycoerythrin | Mannitol. Laminarin | Cellulose, pectin, polysulphate esters | 2-8, equal, apical |
| 2. | Chlorophyll a, d; phycoerythrin | Floridean starch | Cellulose, pectin, polysulphate esters | Absent |
| 3. | Chlorophyll a, c; Fucoxanthin | Mannitol. Laminarin | Cellulose and algin | 2, unequal, lateral |
| 4. | Chlorophyll a, b; | Starch | Cellulose | 2-8, equal, apical |
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
87%
Level 1: 80%+
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The sporophyte of mosses is more elaborate than that in:
| 1. | Pteridophytes | 2. | Gymnosperms |
| 3. | Angiosperms | 4. | Liverworts |
Subtopic: Bryophytes (Liverworts) |
93%
Level 1: 80%+
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