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Q. No.Consider the two statements:
Statement I:
Classification for flowering plants given by George Bentham and Joseph Dalton Hooker is a natural system of classification.
Statement II:
Classification for flowering plants given by Linnaeus is an artificial system of classification.
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Classification System |
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Level 1: 80%+
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Identify the incorrectly matched pair:
| 1. | Phylogenetic classification systems | Based on evolutionary relationships |
| 2. | Numerical Taxonomy | Based on all observable characteristics |
| 3. | Cytotaxonomy | Based on a few vegetative characters only. |
| 4. | Chemotaxonomy | Uses the chemical constituents of the plant |
Subtopic: Classification System |
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Level 1: 80%+
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In bryophytes:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Zygotes undergo reduction division immediately. |
| II: | The sporophyte is not free-living but attached to the photosynthetic gametophyte and derives nourishment from it. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Bryophytes |
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Level 2: 60%+
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Fragmentation and budding in the secondary protonema are means
of vegetative reproduction in:
of vegetative reproduction in:
| 1. | Mosses | 2. | Liverworts |
| 3. | Vascular cryptogams | 4. | Thalloid green algae |
Subtopic: Bryophytes |
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In Selaginella and Equisetum:
| 1. | spores produced are of one kind. |
| 2. | heterospory is seen. |
| 3. | gametophyte is the dominant generation in the life cycle. |
| 4. | sporophylls form distinct compact structures called strobili or cones. |
Subtopic: Pteridophytes: Heterospory |
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In gymnosperms, pollen grains:
| 1. | develop outside microsporangia |
| 2. | are a result of mitosis in certain pollen mother cells |
| 3. | are carried in air currents |
| 4. | do not form pollen tubes and the male gamete is released into water |
Subtopic: Gymnosperms: I |
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Algae are useful to man in a variety of ways. Identify the correct statements:
1. Only I, II, III and IV
2. Only I, II, IV and V
2. Only I, II and III
4. Only II, III and IV
| I: | At least a half of the total carbon dioxide fixation on earth is carried out by algae through photosynthesis. |
| II: | They are of paramount importance as primary producers of energy-rich compounds which form the basis of the food cycles of all aquatic animals. |
| III: | Many species of Porphyra, Laminaria and Sargassum are among the 70 species of marine algae used as food. |
| IV: | Agar, one of the commercial products obtained from Gelidium and Gracilaria, are used to grow microbes and in preparations of ice-creams and jellies. |
| V: | Chlorella, a multicellular alga rich in proteins, is used as food supplement even by space travellers. |
1. Only I, II, III and IV
2. Only I, II, IV and V
2. Only I, II and III
4. Only II, III and IV
Subtopic: Algae |
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What will be A, B and C in the given table?
| Stored food | Cell wall | Flagellar insertions | |
| Green algae | Starch | A | 2 – 8, equal, apical |
| Brown algae | B | Algin | 2, unequal lateral |
| Red algae | C | Polysulphate esters | D |
| A | B | C | D | |
| 1 | Cellulose | Laminarin and Mannitol |
Laminarin and Mannitol |
2, unequal, apical |
| 2 | Cellulose | Laminarin and Mannitol |
Floridean starch |
Absent |
| 3 | Cellulose | Floridean starch | Laminarin and Mannitol |
4, equal, apical or lateral |
| 4 | Algin | Floridean starch | Floridean starch | Absent |
Subtopic: Algae |
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Study the Assertion statement followed by the Reason statement given below:
| Assertion (A): | Peat moss is used as packing material for trans-shipment of living material. |
| Reason (R): | Peat moss has a good capacity to hold water. |
| 1. | (A) is True but (R) is False. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is False and (R) is True. |
Subtopic: Bryophytes |
93%
Level 1: 80%+
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The given diagram shows:
| 1. | Female gametophyte of Marchantia |
| 2. | Male gametophyte of Marchantia |
| 3. | Female gametophyte of Funaria |
| 4. | Male gametophyte of Funaria |
Subtopic: Bryophytes |
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