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Q. No.In gymnosperms:
I:
the ovules are not enclosed by any ovary wall and remain exposed, both before and after fertilisation.
II:
the male and the female gametophytes do not have an independent free-living existence.
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: Gymnosperms |
85%
From NCERT
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Regarding Pteridophytes:
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: | Genera like Selaginella and Salvinia are heterosporous. |
| II: | Dryopteris, Pteris, and Adiantum belong to Pteropsida. |
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: Pteridophytes |
92%
From NCERT
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Consider the given two statements:
| Assertion (A): | The spread of living pteridophytes is limited and restricted to narrow geographical regions. |
| Reason (R): | Pteridophytes are not dependent on water for fertilisation. |
| 1. | Both (A) and (R) are True and (R) explains (A) |
| 2. | Both (A) and (R) are True and (R) does not explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Pteridophytes |
85%
From NCERT
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Pteridophytes:
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: | evolutionarily are the first terrestrial plants to possess vascular tissues – xylem and phloem. |
| II: | have gametophytes as the dominant generation in their life cycle. |
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: Pteridophytes |
82%
From NCERT
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All the following are examples of mosses except:
| 1. | Funaria | 2. | Polytrichum |
| 3. | Marchantia | 4. | Sphagnum |
Subtopic: Bryophytes (Liverworts) |
84%
From NCERT
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The figure shows:
1. Female thallus of Marchantia
2. Male thallus of Marchantia
3. Gametophyte of Funaria
4. Sporophyte of Funaria
1. Female thallus of Marchantia
2. Male thallus of Marchantia
3. Gametophyte of Funaria
4. Sporophyte of Funaria
Subtopic: Bryophytes |
77%
From NCERT
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How many of the given statements are correct regarding economic importance of algae?
1. 1
2. 2
3. 3
4. 4
| I: | Many species of Porphyra, Laminaria and Sargassum are used as food. |
| II: | Hydrocolloids (water holding substances), e.g., algin from red algae and carrageen from brown algae are used commercially. |
| III: | Agar is obtained from Gelidium and Gracilaria. |
| IV: | Chlorella a unicellular alga rich in proteins is used as food supplement. |
1. 1
2. 2
3. 3
4. 4
Subtopic: Algae |
70%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| COLUMN I | COLUMN II | ||
| A | The gametes are flagellated and similar in size | P | Eudorina |
| B | The gametes are non-flagellated (non-motile) but similar in size | Q | Ulothrix |
| C | the female gametes are larger and flagellated, while the male gametes are smaller and flagellated | R | Fucus |
| D | one large, non-motile (static) female gamete and a smaller, motile male gamete |
S | Spirogyra |
| A | B | C | D | |
| 1. | S | Q | P | R |
| 2. | Q | S | P | R |
| 3. | Q | S | R | P |
| 4. | S | Q | R | P |
Subtopic: Algae |
72%
From NCERT
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Phylogenetic classification systems are based on:
| 1. | all observable characteristics. |
| 2. | cytological information like chromosome number, structure, behaviour. |
| 3. | evolutionary relationships between the various organisms. |
| 4. | natural affinities among the organisms and consider, not only the external features, but also internal features, like ultra-structure, anatomy, embryology and phytochemistry. |
Subtopic: Different Classification Systems |
88%
From NCERT
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Agar, a complex polysaccharide with various applications in microbiology and food industry, is commercially derived from:
| 1. | Red algae | 2. | Brown algae |
| 3. | Green algae | 4. | Diatoms |
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
81%
From NCERT
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