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Q. No.Select the incorrect statement about artificial system of classification of Linnaeus
| 1. | It is called artificial system because it is based on only one or two characters |
| 2. | It was based on androecium structure |
| 3. | It is also called sexual system as he chiefly used characters of stamens |
| 4. | It divides flowering and non-flowering plants into two categories |
Subtopic: Classification System |
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Which of the following statements about numerical taxonomy is incorrect?
| 1. | It is based on the quantification of observable characteristics and the use of statistical methods. |
| 2. | It gives equal importance to all characteristics and does not distinguish between homologous and analogous traits. |
| 3. | It relies solely on genetic data and molecular markers for classification. |
| 4. | It uses computer algorithms to analyze large datasets and determine relationships between organisms. |
Subtopic: Classification System |
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Classification of organisms based on measurable similarities and differences rather than genetic makeup and evolutionary descent is called phenetics. What type of biological classification system does it belong to?
| 1. | Artificial | 2. | Phylogenetic |
| 3. | Cytotaxonomy | 4. | Numerical taxonomy |
Subtopic: Classification System: I | Classification System |
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Given are the following five statements (I - V) for your consideration:
| I: | In Equisetum, the female gametophyte is retained on the parent sporophyte |
| II: | In Ginkgo, male gametophyte is not independent |
| III: | The sporophyte in Marchantia is more developed than that in Polytrichum |
| IV: | Sexual reproduction in Volvox is isogamous |
| V: | The spores of slime moulds lack cell walls |
How many of the above statements is/are correct?
| 1. | Three | 2. | Four |
| 3. | One | 4. | Two |
Subtopic: Algae | Pteridophytes | Gymnosperms |
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AIPMT - 2012
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If you are asked to classify the various algae into distinct groups, which of the following character would you choose?
| 1. | Types of pigments present in the cell |
| 2. | Nature of stored food material in the cell |
| 3. | Structural organization of thallus |
| 4. | Chemical composition of the cell wall |
Subtopic: Algae |
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From NCERT
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Consider the given statements:
1. Only Statement II is correct
2. Both Statement I and Statement II are correct
3. Only Statement III is correct
4. All Statements are correct
| Statement I: | All three classes of algae possess cellulose in their cell walls. |
| Statement II: | Rhodophyceae lacks flagella, whereas Chlorophyceae can have up to 8 flagella. |
| Statement III: | Phaeophyceae stores food in the form of laminarin and starch. |
2. Both Statement I and Statement II are correct
3. Only Statement III is correct
4. All Statements are correct
Subtopic: Algae |
From NCERT
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Which of the following algae is not haplo-diplontic?
| 1. | Kelps | 2. | Ectocarpus |
| 3. | Spirogyra | 4. | Polysiphonia |
Subtopic: Algae |
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| Statement I: | Red algae do not occur in well-lighted regions close to the surface of water. |
| Statement II: | Red algae reproduce by non-motile spores and non-motile gametes. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
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Which of the following statements is true about zoospores and gametes in brown algae?
| 1. | Both zoospores and gametes in brown algae are motile and have equal sized flagella. |
| 2. | Zoospores are non-motile while gametes are motile, both lacking flagella. |
| 3. | Zoospores are motile with two flagella, while gametes are non-motile. |
| 4. | Zoospores and gametes are both motile and similar in the number of flagella. |
Subtopic: Pheophyceae: Brown Algae |
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Consider the following statements regarding brown algae:
| I. | The pigments are chl a, c and xanthophylls, fucoxanthin |
| II. | Storage food is laminarin and mannitol |
| III. | The cellulosic cell wall is covered with algin |
| IV. | They have a centrally located vacuole |
| V. | Their photosynthetic organs are called as fronds - leaf like structures |
| VI. | They have pear shaped biflagellate zoospores |
| VII. | They have two unequal laterally attached flagella. |
The number of correct statements is
1. 5
2. 6
3. 7
4. 4
Subtopic: Pheophyceae: Brown Algae |
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