Advertisements
Advertisements
Question
Discuss the steps involved in Microsporogenesis.
Advertisements
Solution
Microsporogenesis: The stages involved in the formation of haploid microspores from diploid microspore mother cell through meiosis is called Microsporogenesis. The primary sporogenous cells directly, or may undergo a few mitotic divisions to form sporogenous tissue. The last generation of sporogenous tissue functions as microspore mother cells.
Each microspore mother cell divides meiotically to form a tetrad of four haploid microspores (microspore tetrad). Microspores soon separate from one another and remain free in the anther locule and develop into pollen grains.
RELATED QUESTIONS
Sketch and label the V. S. of a mature anatropous ovule.
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.
What is endothelium?
List out the functions of the tapetum.
Distinguish tenuinucellate and crassinucellate 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.
______ 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 ______.
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?
Name the part of pistil that develops into fruits and seeds after fertilization.
