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Q. No.Which of the following will not be applicable to the Gymnosperm Cycas?
1. Coralloid roots
2. Pinnate persistent leaves
3. Dioecy
4. Branched stems
Subtopic: Examples of Gymnosperms |
78%
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Which of the following will not be applicable to the gymnosperm Pinus?
| 1. | Coralloid roots |
| 2. | Mycorrhizal association |
| 3. | Male and female cones or strobili are borne on the same tree |
| 4. | Branched stems |
Subtopic: Examples of Gymnosperms |
79%
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Algal cell walls are made up of:
| 1. | Cellulose, Galactans, Mannans and Minerals |
| 2. | Cellulose, Hemicellulose, Pectins and Proteins |
| 3. | Cellulose, Pectins, Mannans and Minerals |
| 4. | Cellulose, Hemicellulose, Mannans and Pectins |
Subtopic: Algae |
63%
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Identify the correct statements:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | The gametes are flagellated and similar in size in Ulothrix or non-flagellated (non-motile) but similar in size in Spirogyra. |
| II: | Fusion of two gametes dissimilar in size, as in species of Eudorina is termed as anisogamous. |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Algae |
82%
From NCERT
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| Assertion (A): | Red algae are often found in deep waters. |
| Reason (R): | They have unique pigments that enable adaptations to low light conditions |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True and (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
87%
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| Assertion (A): | Bryophytes have not been very successful on land. |
| Reason (R): | The gametophyte is the dominant stage in the alternation of generation in Bryophytes. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True and (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Bryophytes |
81%
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Identify the correct statements:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | Phylogenetic classification systems are based on evolutionary relationships. |
| II: | Numerical Taxonomy is based on all observable characteristics. |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Classification System |
85%
From NCERT
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Thallus like plant body, attached to substratum by rhizoids, requiring water for sexual reproduction and a dominant gametophyte characterise:
| 1. | Pteridophytes | 2. | Gymnosperms |
| 3. | Monocots | 4. | Bryophytes |
Subtopic: Bryophytes |
90%
From NCERT
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What is a prothallus?
| 1. | A structure in pteridophytes formed before the thallus develops |
| 2. | A sporophytic free living structure formed in pteridophytes |
| 3. | A gametophyte free living structure formed in pteridophytes |
| 4. | A primitive structure formed after fertilization in pteridophytes |
Subtopic: Pteridophytes |
70%
From NCERT
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The classification system given by Bentham and Hooker is a/an:
| 1. | Artificial system | 2. | Natural system |
| 3. | Phylogenetic system | 4. | Useless system |
Subtopic: Classification System |
84%
From NCERT
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