Advertisements
Advertisements
प्रश्न
List out the functions of the tapetum.
Give the role of tapetum.
Advertisements
उत्तर
- It supplies nutrition to the developing microspores.
- It contributes sporopollenin through ubisch bodies thus plays an important role in pollen wall formation.
- The pollenkitt material is contributed by tapetal cells and is later transferred to the pollen surface.
- Exine proteins responsible for the ‘rejection reaction’ of the stigma are present in the cavities of the exine. These proteins are derived from tapetal cells.
Notes
Students can refer to the provided solutions based on their preferred marks.
APPEARS IN
संबंधित प्रश्न
Sketch and label V. S. of mature anatropous ovule.
First cell of male gametophyte in angiosperm is
Arrange the layers of another wall from locus to periphery
What is Cantharophily?
List any two strategy adopted by bisexual flowers to prevent self-pollination.
What is endothelium?
Give short notes on types of ovules.
Discuss the steps involved in Microsporogenesis.
With a suitable diagram explain the structure of an ovule.
______ refers to the flower in which gynoecium possesses many free carpels.
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.
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:
