Nucellus as a source of nutrition for the embryo seed ovule

The nucellus is a mass of cells enclosed within the integuments of the ovule. It is an important part of the ovule that provides nutrition to the developing embryo seed. The nucellus is also known as the megasporangium and is present in the ovule of a flowering plant.

The role of nucellus in the development of the embryo seed

The nucellus plays a crucial role in the development of the embryo seed. It provides nutrition to the developing embryo by synthesizing and storing food materials like carbohydrates, lipids, and proteins. The nucellus also produces enzymes that are essential for the growth and development of the embryo.

The nucellus also forms a protective layer around the embryo, which helps to protect it from external environmental factors like temperature changes, pathogens, and predators.

Structure of the nucellus

The nucellus is a mass of cells that is surrounded by the integuments of the ovule. The nucellus is made up of two types of cells: the nucellar cells and the archesporial cells. The nucellar cells are the larger cells that are responsible for the synthesis and storage of food materials. The archesporial cells are the smaller cells that give rise to the megaspore mother cell, which eventually develops into the embryo sac.

Conclusion

In conclusion, the nucellus is an important part of the ovule that provides nutrition to the developing embryo seed. It synthesizes and stores food materials like carbohydrates, lipids, and proteins, and also produces enzymes that are essential for the growth and development of the embryo. The nucellus also forms a protective layer around the embryo, which helps to protect it from external environmental factors.