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प्रश्न
What is endothelium?
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उत्तर
In Asteraceae species, the inner layer of the integument gets specialized for nourishing the embryosac and this is called integumentary tapetum or endothelium.
संबंधित प्रश्न
Sketch and label V. S. of mature anatropous ovule.
Choose the correct statement(s) about tenuinucellate ovule
List any two strategy adopted by bisexual flowers to prevent self-pollination.
List out the functions of the tapetum.
Give short notes on types of ovules.
Explain the pollination mechanism in Salvia.
Discuss the steps involved in Microsporogenesis.
With a suitable diagram explain the structure of an ovule.
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:
During the formation of leaves and elongation of stem, some cells ‘left behind’ from the shoot apical meristem, constitute the:
Name the part of pistil that develops into fruits and seeds after fertilization.
