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Q. No.Identify the correct statements:
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.
1. Only I
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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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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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%
From NCERT
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Which of the following will not be applicable to the Gymnosperm Cycas?
1. Coralloid roots
2. Pinnate persistent leaves
3. Dioecy
4. Branched stems
1. Coralloid roots
2. Pinnate persistent leaves
3. Dioecy
4. Branched stems
Subtopic: Examples of Gymnosperms |
78%
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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