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Q. No.Identify the correctly matched pair:
1.
Isogamy with flagellated gametes
Volvox
2.
Isogamy with non-flagellated gametes
Ulothrix
3.
Anisogamy
Udorina
4.
Oogamy
Spirogyra
Subtopic: Algae |
74%
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Select the option where the given characters are correct match for members of Rhodophyceae:
| Major pigments | Stored food | Cell wall | Flagella | |
| 1. | Chlorophyll a, d; phycoerythrin | Mannitol. Laminarin | Cellulose, pectin, polysulphate esters | 2-8, equal, apical |
| 2. | Chlorophyll a, d; phycoerythrin | Floridean starch | Cellulose, pectin, polysulphate esters | Absent |
| 3. | Chlorophyll a, c; Fucoxanthin | Mannitol. Laminarin | Cellulose and algin | 2, unequal, lateral |
| 4. | Chlorophyll a, b; | Starch | Cellulose | 2-8, equal, apical |
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
86%
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Regarding pteridophytes:
1. Only II is incorrect
2. Only I is correct
3. I and II are incorrect
4. I, II and III are correct
| I: | They are the first terrestrial plants to possess true vascular tissue |
| II: | Main plant is sporophyte |
| III: | Water is required for transfer of antherozoids |
2. Only I is correct
3. I and II are incorrect
4. I, II and III are correct
Subtopic: Pteridophytes |
89%
From NCERT
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Which of the following is true regarding the classes of Bryophytes?
| 1. | The thallus of mosses is dorsiventral and closely appressed to the surface |
| 2. | In the life cycle of liverworts, the predominant gametophytic stage is divided into two stages - the protonema and the leafy stage |
| 3. | The sporophyte in liverworts is more elaborate than in mosses |
| 4. | Asexual reproduction in liverworts takes place by fragmentation of thalli, or by the formation of specialised structures called gemmae |
Subtopic: Bryophytes (Liverworts) |
62%
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The algae shown in the diagram below belongs to the class which has:
1. 2-8 equal and apical flagella
2. 2 unequal and lateral flagella
3. 2 unequal and apical flagella
4. 2-8 equal and lateral flagella
1. 2-8 equal and apical flagella
2. 2 unequal and lateral flagella
3. 2 unequal and apical flagella
4. 2-8 equal and lateral flagella
Subtopic: Algae |
80%
From NCERT
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Given below are two statements:
| Statement I: | Chlorella is used as food supplement by space travellers |
| Statement II: | Chlorella is a unicellular algae |
| 1. | Both I and II are true and II correctly explains I |
| 2. | I is true and II is false |
| 3. | Both I and II are true but II does not explain I |
| 4. | Both I and II are false |
Subtopic: Algae |
74%
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Which of the following statement is true about the difference between Cycas and Pinus?
| 1. | Pinus has coralloid roots associated with N2-fixing cyanobacteria, whereas Cycas has roots with fungal association in the form of mycorrhiza |
| 2. | Cycas is heterosporous, whereas Pinus is homosporous |
| 3. | Male cones and female megasporophylls are borne on different trees in Cycas, whereas they are borne on the same tree in Pinus |
| 4. | Stems of Cycas are branched, whereas Pinus has unbranched stems |
Subtopic: Gymnosperms |
61%
From NCERT
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Consider the following statements about the different classes of algae:
| I: | The members of Chlorophyceae have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose |
| II: | The members of Rhodophyceae do not have a flagellum |
| III: | Members of Phaeophyceae store food as floridean starch which is very similar to amylopectin and glycogen in structure |
| 1. | Only I and III are correct |
| 2. | Only I and II are correct |
| 3. | Only II and III are correct |
| 4. | All I, II and III are correct |
Subtopic: Chlorophyceae: Green Algae |
61%
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Match each item in Column I with one in Column II and choose the correct option from the codes given below:
| Column I | Column II | ||
| A. | Psilopsida | P | Selanginella |
| B. | Lycopsida | Q | Adiantum |
| C. | Sphenopsida | R | Equisetum |
| D. | Pteropsida | S | Psilotum |
| A | B | C | D | |
| 1. | R | Q | S | P |
| 2. | S | P | R | Q |
| 3. | P | S | Q | R |
| 4. | Q | R | P | S |
Subtopic: Pteridophytes |
92%
From NCERT
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A plant has a diploid sporophyte as the dominant, independent, photosynthetic, vascular body. It alternates with multicellular, saprophytic/autotrophic, independent but short-lived haploid gametophyte. This plant most likely belongs to:
| 1. | Red algae | 2. | Bryophytes |
| 3. | Pteridophytes | 4. | Gymnosperms |
Subtopic: Pteridophytes |
79%
From NCERT
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