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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
Sketch and label the V. S. of a mature anatropous ovule.
Arrange the layers of another wall from locus to periphery
Choose the correct statement(s) about tenuinucellate ovule
Differentiate Secretary and invasive tapetum.
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.
With a suitable diagram explain the structure of an ovule.
Identify the event in a botanical garden that is never directly influenced by light.
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.
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?
