Polyploidy is a phenomenon in which cells contain more than two sets of chromosomes. It can occur naturally or can be induced artificially. Angiosperms (flowering plants) are known for their ability to undergo polyploidy.

Polyploid tissue in an angiosperm plant is the tapetum. The tapetum is a layer of cells present in the anther of the flower. It is responsible for providing nutrients and energy to the developing pollen grains.

Explanation:

Polyploidy is a common phenomenon in angiosperms, and it can occur at various stages of plant development. Polyploidy can result in the formation of new species, as it can lead to the evolution of new traits and characteristics.

In angiosperms, the tapetum is a specialized tissue that plays a crucial role in the development of pollen grains. The tapetum is a layer of cells that surrounds the developing pollen grains in the anther. It provides nutrients and energy to the pollen grains, which are essential for their growth and maturation.

Polyploidy in the tapetum can lead to an increase in the size and number of pollen grains. This can result in increased fertility and yield in crops. Polyploid tapetum can also lead to changes in the morphology and physiology of the plant, which can be beneficial in some cases.

In conclusion, the tapetum is an example of polyploid tissue present in angiosperm plants. Polyploidy in the tapetum can lead to an increase in the size and number of pollen grains, which can result in increased fertility and yield in crops. Polyploid tapetum can also lead to changes in the morphology and physiology of the plant, which can be beneficial in some cases.

Tapetum is polyploid due to endomitosis and nuclear division