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प्रश्न
Distinguish tenuinucellate and crassinucellate ovules.
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उत्तर
- Tenuinucellate Ovule:
- Ovules with hypodermal sporogerous cell with unilayerd nucellus tissue is called tenuinucellate type.
- They have very small nucellus
- Crassinucellate Ovule:
- Ovule with subhypodermal sporogenous cell is called crassinucellate type.
- They have large nucellus
संबंधित प्रश्न
Arrange the layers of another wall from locus to periphery
Choose the correct statement(s) about tenuinucellate ovule
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What is endothelium?
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With a suitable diagram explain the structure of an ovule.
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Identify the function/s of integuments.
In a mature ovule, shows the presence of an oval shaped, haploid structure at micropylar end known as ______.
Identify the CORRECT term for the following:
The thick, highly resistant outer layer of pollen wall.
Ovule is attached to the ______ by a small stalk called funiculus.
Match the Column I (Type of pollination) and Column II (Characteristics). Select the correct option.
| Column I | Column II | ||
| a. | Ornithophily | 1. | Nocturnal flower |
| b. | Entomoohily | 2. | Light pollens |
| c. | Chiropterophily | 3. | Funnel-shaped corolla |
| d. | Anemophily | 4. | Pleasant fragrance and nectar |
From the following which is NOT true about self-pollination?
Flowering in pineapple is promoted by:
