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Q. No.Subtopic: Bryophytes (Liverworts) |
88%
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The terms that can be applied to all gymnosperms include:
| 1. | Naked seeds, Homosporous, Dominant independent sporophyte |
| 2. | Seeds enclosed in ovary wall, Heterosporous, Dominant independent sporophyte |
| 3. | Naked seeds, Heterosporous, Dominant independent sporophyte |
| 4. | Naked seeds, Heterosporous, Dominant independent gametophyte |
Subtopic: Gymnosperms |
60%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | The spread of living pteridophytes is limited and restricted to narrow geographical regions. |
| Reason (R): | Evolutionarily, pteridophytes are the first terrestrial plants to possess vascular tissues – xylem and phloem. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Pteridophytes |
80%
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What would be true for both Cycas and Pinus?
| 1. | Cycas is a gymnosperm and Pinus is a pteridophyte |
| 2. | The gametophyte is dominant in the life cycle of Cycas and the sporophytes is dominant in the life cycle of Pinus |
| 3. | Roots of Pinus have mycorrhiza association and coralloid roots of Cycas are associated with nitrogen-fixing cyanobacteria |
| 4. | In Pinus, the male and female cones are borne on different trees and in Cycas on the same tree |
Subtopic: Gymnosperms |
89%
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Genera like Selaginella and Salvinia:
1. do not possess vascular tissues
2. have a dominant gametophyte in their life cycle
3. produce two kinds of spores
4. have macrophylls
1. do not possess vascular tissues
2. have a dominant gametophyte in their life cycle
3. produce two kinds of spores
4. have macrophylls
Subtopic: Pteridophytes |
88%
From NCERT
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The cell wall of the cells of an alga has cellulose and algin. Another feature expected in this alga would be:
| 1. | Floridean starch as stored food |
| 2. | Phycoerythrin in addition to chlorophyll a, c |
| 3. | 2, unequal, lateral flagellar insertions |
| 4. | Polysulphate esters in cell wall |
Subtopic: Pheophyceae: Brown Algae |
73%
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Regarding artificial system of classification of living organisms:
1. I is correct and II is incorrect
2. Both I and II are correct and II explains I
3. I is incorrect and II is correct
4. Both I and II are correct but II does not explain I
| I: | It is the most acceptable system for classification of living organisms. |
| II: | The vegetative characters are more easily affected by environment. |
1. I is correct and II is incorrect
2. Both I and II are correct and II explains I
3. I is incorrect and II is correct
4. Both I and II are correct but II does not explain I
Subtopic: Classification System: II |
77%
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The system of classification of plants given by Carolus Linnaeus was:
| 1. | an artificial system based mainly on the androecium structure. |
| 2. | a natural system based on large number of natural affinities between flowering plants. |
| 3. | was a phylogenetic system based on evolutionary relationships. |
| 4. | was a chemotaxonomic system based on structure of homologous proteins. |
Subtopic: Classification System: II |
84%
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In numerical taxonomy:
| I: | computers are used and all the observable characters are taken into consideration. |
| II: | hundreds of characters can be considered together and each character is given equal importance. |
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: Classification System: I |
84%
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Match each item in Column I with one in Column II and select the correct match as your answer from the coders given:
Codes
| Column I [Classification method] |
Column II [Feature used] |
||
| A. | Artificial | P. | Evolutionary relationships |
| B. | Phylogenetic | Q. | Gross morphological characters |
| C. | Chemotaxonomy | R. | Chemical constituents of plants |
| D. | Cytotaxonomy | S. | Chromosome number, structure and behaviour |
Codes
| A | B | C | D | |
| 1. | P | Q | S | R |
| 2. | Q | P | R | S |
| 3. | R | S | P | Q |
| 4. | S | R | Q | P |
Subtopic: Classification System: II |
95%
From NCERT
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