Which of the following layers in the wall of an anther nourishes the d...
- The tapetum is a specialised layer of nutritive cells found within the anther of flowering plants, where it is located between the sporangenous tissue and the anther wall.
- Tapetum is important for the nutrition and development of pollen grains, as well as a source of precursors for the pollen coat.
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Which of the following layers in the wall of an anther nourishes the d...
'In a microsporangium the innermost layer is called TAPETUM. It nourishes the developing pollen grains. Cells of the TAPETUM possess dense cytoplasm and generally possess more than one nucleus' - NCERT, pg 21
Which of the following layers in the wall of an anther nourishes the d...
The layer in the wall of an anther that nourishes the developing pollen grains is the tapetum.
Explanation:
The anther is the male reproductive structure of a flower that produces pollen grains. It consists of four layers of cells, namely the epidermis, endothecium, middle layers, and the tapetum.
The tapetum is the innermost layer of cells in the anther wall, located just below the microsporangia (pollen sacs). It is a specialized layer of cells that plays an important role in the development of pollen grains.
Functions of Tapetum:
The tapetum is responsible for providing nutrients and other essential substances to the developing pollen grains. It also secretes enzymes and other substances that are necessary for the proper maturation of pollen grains.
The tapetum also plays a role in the formation of the pollen wall. It produces sporopollenin, which is a complex organic polymer that forms the outer layer of the pollen grain. This layer protects the pollen from environmental stress and ensures its survival during pollination.
In summary, the tapetum is the layer in the wall of an anther that nourishes the developing pollen grains by supplying them with essential nutrients and substances.
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