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प्रश्न
Distinguish tenuinucellate and crassinucellate ovules.
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
Sketch and label V. S. of mature anatropous ovule.
Choose the correct statement(s) about tenuinucellate ovule
Differentiate Secretary and invasive tapetum.
What is endothelium?
List out the functions of the tapetum.
Give short notes on types of ovules.
With a suitable diagram explain the structure of an ovule.
______ refers to the flower in which gynoecium possesses many free carpels.
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 |
Identify the botanical name of garden pea.
From the following which is NOT true about self-pollination?
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.
