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Q. No.Floridean starch is a form of:
1.
stored food in red algae that resembles the structure of amylopectin and glycogen
2.
stored food in brown algae that resembles the structure of agarose and agaropectin
3.
carbohydrate found in cell wall of brown algae that resembles the structure of amylopectin and glycogen
4.
carbohydrate found in cell wall of red algae that resembles the structure of agarose and agaropectin
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
90%
From NCERT
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A and B in the given diagram respectively show:
| 1. | Male thallus of Marchantia and Female thallus of Marchantia |
| 2. | Female thallus of Marchantia and Male thallus of Marchantia |
| 3. | Male thallus of Funaria and Female thallus of Funaria |
| 4. | Female thallus of Funaria and Male thallus of Funaria |
Subtopic: Bryophytes |
89%
From NCERT
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In gymnosperms:
| 1. | gametophytes have an independent free-living existence |
| 2. | pollen grains are transported by water |
| 3. | pollen tubes are not seen |
| 4. | seeds are not covered |
Subtopic: Gymnosperms |
88%
From NCERT
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Asexual reproduction in brown algae is by:
| 1. | biflagellate biconcave disc shaped zoospores |
| 2. | non-motile spherical aplanogametes |
| 3. | biflagellate pear shaped zoospores |
| 4. | non-motile zoospores produced in zoosporangia |
Subtopic: Pheophyceae: Brown Algae |
89%
From NCERT
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Consider the two statements:
| Statement I: | Antheridium in bryophytes produces biflagellate antherozoids. |
| Statement II: | Archegonium in bryophytes produces a single egg. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement II is correct; Statement I is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Bryophytes |
90%
From NCERT
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Classification system based on information like chromosome number, structure, behaviour is called as:
1. Numerical taxonomy
2. Cytotaxonomy
3. Chemotaxonomy
4. Cladistics
1. Numerical taxonomy
2. Cytotaxonomy
3. Chemotaxonomy
4. Cladistics
Subtopic: Classification System |
87%
From NCERT
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Regarding red algae:
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: | Majority are fresh water with greater concentrations found in the colder areas. |
| II: | They occur in both well-lighted regions close to the surface of water and also at great depths in oceans where relatively little light penetrates. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
82%
From NCERT
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The leafy stage in the life cycle of mosses:
| 1. | is a stage of the sporophytic generation. |
| 2. | is a creeping, green, branched and frequently filamentous stage. |
| 3. | develops directly from a spore. |
| 4. | bears sex organs. |
Subtopic: Bryophytes |
54%
From NCERT
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Consider the two given statements:
| Assertion (A): | The spread of living pteridophytes is limited and restricted to narrow geographical regions. |
| Reason (R): | Pteridophytes are terrestrial plants that possess vascular tissues – xylem and phloem. |
| 1. | Both (A) and (R) are True and the (R) correctly explains (A) |
| 2. | (A) is True but (R) is False |
| 3. | (A) is False but (R) is True |
| 4. | Both (A) and (R) are True but (R) does not correctly explain (A) |
Subtopic: Pteridophytes |
82%
From NCERT
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Fucoxanthin is an important pigment in:
1. Red algae
2. Blue-green algae
3. Green algae
4. Brown algae
1. Red algae
2. Blue-green algae
3. Green algae
4. Brown algae
Subtopic: Pheophyceae: Brown Algae |
88%
From NCERT
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