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Q. No.Identify the incorrect statement:
1.
Ray florets of sunflower have epigynous flowers with inferior ovary.
2.
In vexillary aestivation, keel are the two largest posterior petals.
3.
Stamens are united into one bunch in China rose.
4.
Placentation is marginal in Pea.
Subtopic: Flower & Parts of Flower |
82%
From NCERT
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Which of the following is/are a correct match?
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| Fabaceae | Solanaceae | ||
| I. | Ovary | Inferior | Monocarpellary unilocular |
| II. | Fruit | Endospermous | Non-endospermic |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Semi Technical Description |
65%
From NCERT
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Identify the option where the features are correctly matched to types with respect to mustard:
| Flower symmetry | Ovary position | Androecium | Gynoecium | |
| 1. | Zygomorphic | Inferior | Variable length stamens within a flower | Parietal placentation |
| 2. | Zygomorphic | Inferior | Polyadelphous | Marginal placentation |
| 3. | Actinomorphic | Superior | Polyadelphous | Axile placentation |
| 4. | Actinomorphic | Superior | Variable length stamens within a flower | Parietal placentation |
Subtopic: Flower & Parts of Flower |
77%
From NCERT
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Subtopic: Flower & Parts of Flower |
81%
From NCERT
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Match each item in Column I with the one given in Column II and select the correct match from the codes given:
Codes:
| Column I [Position of Ovary] |
Column II [Type of flower] |
||
| A. | Inferior | P. | Hypogynous |
| B. | Half inferior | Q. | Perigynous |
| C. | Superior | R. | Epigynous |
Codes:
| A | B | C | |
| 1. | P | Q | R |
| 2. | P | R | Q |
| 3. | R | Q | P |
| 4. | R | P | Q |
Subtopic: Flower & Parts of Flower |
86%
From NCERT
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The type of placentation shown in the given diagram is not seen in:
| 1. | Mustard | 2. | China rose |
| 3. | Tomato | 4. | Lemon |
Subtopic: Flower & Parts of Flower |
69%
From NCERT
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Identify the incorrectly matched pair:
| 1. | Pericarp | Wall of the fruit |
| 2. | Perisperm | Residual, persistent nucellus |
| 3. | Perigynous | A flower with superior ovary |
| 4. | Perianth | Floral structure comprised of calyx and corolla especially when the two whorls are fused |
Subtopic: Fruits & their Types |
88%
From NCERT
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Offsets, sub-aerial modifications of stem, are produced by
1. Meiotic divisions
2. Mitotic divisions
3. Parthenocarpy
4. Parthenogenesis
1. Meiotic divisions
2. Mitotic divisions
3. Parthenocarpy
4. Parthenogenesis
Subtopic: Aerial Stem Modification |
74%
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Identify the correct statement(s) regarding the modifications seen in stems:
| I: | Stem tendrils develop from axillary buds and help plants, such as pea, to climb |
| II: | Opuntia modifies its stems into flattened structures to protect itself from browsing animals |
| III: | Underground stems of some plants such as grass and strawberry spread to new niches and when older plants die, new plants are formed. |
| 1. | I, II, and III |
| 2. | Only II and III |
| 3. | Only III |
| 4. | Only I and III |
Subtopic: Modifications of Stem |
From NCERT
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In cymose type of inflorescence:
| 1. | the main axis terminates in a flower and flowers are borne in basipetal order |
| 2. | the main axis continues to grow and the flowers are borne laterally in an acropetal order |
| 3. | the main axis terminates in a flower and flowers are borne in an acropetal order |
| 4. | the main axis continues to grow and the flowers are borne laterally in basipetal order |
Subtopic: Inflorescence |
86%
From NCERT
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