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Q. No.Which of the following statement about the gynoecium and its parts is correct?
1.
The ovary is the elongated tube that connects the style to the stigma.
2.
Carpels are termed apocarpous when they are fused, as seen in mustard and tomato.
3.
The stigma is the receptive surface for pollen grains and is usually at the tip of the style.
4.
After fertilisation, the style develops into seeds and the ovary matures into a fruit.
Subtopic: Flower & Parts of Flower |
94%
From NCERT
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If a fruit is formed without fertilisation of the ovary, it is called a:
| 1. | parthenocarpic fruit | 2. | parthenogenetic fruit |
| 3. | arrhenotokic fruit | 4. | thelytokic fruit |
Subtopic: Fruits & their Types |
100%
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What structure is seen in both monocotyledonous and dicotyledonous seeds?
| 1. | Scutellum | 2. | Aleurone layer |
| 3. | Plumule | 4. | Coleoptile |
Subtopic: Seed |
86%
From NCERT
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In some plants such as Rhizophora growing in swampy areas, many roots come out of the ground and grow vertically upwards. Such roots:
1. provide support to the plant
2. help to get oxygen for respiration
3. are organs of perennation for plants
4. act as storage organs
1. provide support to the plant
2. help to get oxygen for respiration
3. are organs of perennation for plants
4. act as storage organs
Subtopic: Modification of Roots |
98%
From NCERT
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Which floral part performs the function of attracting insect pollinators?
| 1. | Carpals | 2. | Stamens |
| 3. | Petals | 4. | Sepals |
Subtopic: Flower & Parts of Flower |
90%
From NCERT
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Subtopic: Flower & Parts of Flower |
81%
From NCERT
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Consider the given two statements:
| Statement I: | The stem develops from the plumule of the embryo of a germinating seed. |
| Statement II: | The region of the stem where leaves are born is called an internode. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Morphology of Stems |
89%
From NCERT
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Consider the given two statements:
| Statement I: | The petiole helps hold the blade to light and long thin flexible petioles allow leaf blades to flutter in the wind. |
| Statement II: | The lamina or the leaf blade is the green expanded part of the leaf with veins and veinlets, with the midrib being the middle prominent vein. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Morphology of Leaf |
99%
From NCERT
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Consider the given two statements:
| Statement I: | The fleshy leaves of onion and garlic store food. |
| Statement II: | In Australian acacia, the leaves are small and short-lived, and the petioles expand, become green, and synthesize food. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Modification of Leaf |
96%
From NCERT
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Consider the given two statements:
| Statement I: | A typical flower has four different kinds of whorls arranged successively on the swollen end of the stalk or pedicel, called thalamus or receptacle. |
| Statement II: | Calyx and corolla are reproductive organs, while androecium and gynoecium are accessory organs. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Flower & Parts of Flower |
98%
From NCERT
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