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Q. No.Which of the following is a heterosporous pteridophyte?
1.
Equisetum
2.
Selaginella
3.
Pteris
4.
Lycopodium
Subtopic: Pteridophytes |
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Which of the following is a characteristic feature of brown algae?
1. Only (a) and (b)
2. Only (b) and (c)
3. Only (a) and (c)
4. (a), (b) and (c)
| (a) | Presence of chlorophyll a and c, and fucoxanthin. |
| (b) | Storage of food in the form of starch. |
| (c) | Cell wall made of cellulose and algin. |
2. Only (b) and (c)
3. Only (a) and (c)
4. (a), (b) and (c)
Subtopic: Pheophyceae: Brown Algae |
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Match List-I with List-II
Choose the correct answer from the options given below:
1. A-IV, B-II, C-III, D-I
2. A-III, B-IV, C-I, D-II
3. A-III, B-II, C-I, D-IV
4. A-IV, B-I, C-II, D-III
| List-I | List-II | ||
| A. | Ulothrix | I. | Anisogamy |
| B. | Spirogyra | II. | Oogamy |
| C. | Eudorina | III. | Isogamy, flagellated similar in size gametes |
| D. | Fucus | IV. | Isogamy, non-flagellated similar in size gametes |
1. A-IV, B-II, C-III, D-I
2. A-III, B-IV, C-I, D-II
3. A-III, B-II, C-I, D-IV
4. A-IV, B-I, C-II, D-III
Subtopic: Algae |
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Which of the following is not applicable for members of Rhodophycae?
| 1. | Presence of r-phycoerythrin |
| 2. | Found only near the surface of water bodies, never deep. |
| 3. | Absence of flagella |
| 4. | Floridean starch is the stored food. |
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
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Which of the following will not be true regarding Pteridophytes?
1. A dominant sporophyte.
2. Possess vascular tissues.
3. All are heterosporous.
4. Include horsetails.
1. A dominant sporophyte.
2. Possess vascular tissues.
3. All are heterosporous.
4. Include horsetails.
Subtopic: Pteridophytes |
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What algae has been depicted in the given figure?
| 1. | Laminaria | 2. | Fucus |
| 3. | Polysiphonia | 4. | Volvox |
Subtopic: Chlorophyceae: Green Algae |
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Consider the given two statements:
| Statement I: | In most members of Rhodophyceae, food is stored as floridean starch. |
| Statement II: | Floridean starch is structurally similar to amylopectin and glycogen. |
| 1. | Both I and II are correct |
| 2. | Both I and II are incorrect |
| 3. | I is correct; II is incorrect |
| 4. | I is incorrect; II is correct |
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
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Which of the following correctly defines a phylogenetic system of classification?
| 1. | Classification based only on similarities in external features |
| 2. | Classification based on evolutionary relationships among organisms |
| 3. | Classification based on habitat and mode of life |
| 4. | Classification based on utility to humans |
Subtopic: Classification System |
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Species of Sphagnum, a moss, provide peat that has long been used as fuel and as packing material for transhipment of living material. Which of the following statements best explains why Sphagnum is suitable for these applications?
| 1. | Sphagnum has a high lignin content, making it resistant to decay and suitable for fuel. |
| 2. | Sphagnum can absorb and retain large amounts of water due to its unique cellular structure, making it ideal for packing living material. |
| 3. | Sphagnum contains silica deposits in its cell walls, which provide rigidity and durability. |
| 4. | Sphagnum releases antimicrobial compounds that prevent the growth of pathogens in packed materials. |
Subtopic: Bryophytes |
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Heterospory is found in:
| 1. | All pteridophytes |
| 2. | Only angiosperms |
| 3. | Only gymnosperms |
| 4. | Some pteridophytes and all seed plants |
Subtopic: Pteridophytes: Heterospory |
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