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Q. No.The classification based on the premise that organisms belonging to the same taxa have a common ancestor is called as:
1. Cytotaxonomy
2. Phylogenetic system
3. Chemotaxonomy
4. Numerical taxonomy
Subtopic: Classification System: I | Classification System: II | Classification System |
95%
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Green algae usually have a rigid cell wall made of:
| 1. | an inner layer of cellulose and an outer layer of pectose |
| 2. | an inner layer of pectose and an outer layer of cellulose |
| 3. | an inner layer of cellulose and an outer layer of lignin |
| 4. | an inner layer of cellulose and an outer layer of chitin |
Subtopic: Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae: II | Chlorophyceae: Green Algae: III |
90%
From NCERT
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Identify the incorrect statement:
| 1. | The gymnosperms are heterosporous. |
| 2. | Spores in gymnosperms are produced within sporangia. |
| 3. | Sporangia in gymnosperms are borne on sporophylls which are arranged spirally along an axis to form lax or compact strobili or cones. |
| 4. | Male strobili in gymnosperms are called macrosporangiate. |
Subtopic: Gymnosperms |
88%
From NCERT
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The leafy stage in the life cycle of a moss:
| 1. | develops from the primary protonema. |
| 2. | consists of upright, slender axes bearing spirally arranged leaves. |
| 3. | is attached to the soil through unicellular and unbranched rhizoids. |
| 4. | lacks the sex organs. |
Subtopic: Bryophytes | Bryophytes (Anthoceropsida) |
77%
From NCERT
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The given diagram shows:
1. Female gametophyte of Marchantia
2. Male gametophyte of Marchantia
3. Female gametophyte of Funaria
4. Male gametophyte of Funaria
1. Female gametophyte of Marchantia
2. Male gametophyte of Marchantia
3. Female gametophyte of Funaria
4. Male gametophyte of Funaria
Subtopic: Bryophytes |
93%
From NCERT
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Consider the two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Classification for flowering plants given by George Bentham and Joseph Dalton Hooker is a natural system of classification. |
| Statement II: | Classification for flowering plants given by Linnaeus is an artificial system of classification. |
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Classification System |
83%
From NCERT
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Identify the incorrectly matched pair:
| 1. | Phylogenetic classification systems | Based on evolutionary relationships |
| 2. | Numerical Taxonomy | Based on all observable characteristics |
| 3. | Cytotaxonomy | Based on a few vegetative characters only. |
| 4. | Chemotaxonomy | Uses the chemical constituents of the plant |
Subtopic: Classification System |
94%
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In bryophytes:
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: | Zygotes undergo reduction division immediately. |
| II: | The sporophyte is not free-living but attached to the photosynthetic gametophyte and derives nourishment from it. |
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: Bryophytes |
78%
From NCERT
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Fragmentation and budding in the secondary protonema are means
of vegetative reproduction in:
1. Mosses
2. Liverworts
3. Vascular cryptogams
4. Thalloid green algae
of vegetative reproduction in:
1. Mosses
2. Liverworts
3. Vascular cryptogams
4. Thalloid green algae
Subtopic: Bryophytes |
87%
From NCERT
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In Selaginella and Equisetum:
| 1. | spores produced are of one kind. |
| 2. | heterospory is seen. |
| 3. | gametophyte is the dominant generation in the life cycle. |
| 4. | sporophylls form distinct compact structures called strobili or cones. |
Subtopic: Pteridophytes: Heterospory |
75%
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