Question

define nucleus for class 9​

Answer 1

Answer:

The nucleus is small, round and membrane bound structure found in cell. The fluid inside the nucleus surrounded by nuclear membrane is called nucleoplasm. It controls the cell's growth and reproduction because it contains cell's hereditary information.

Explanation:

Answer 2

Answer:

The cell nucleus is a large organelle in eukaryotic organisms which protects the majority of the DNA within each cell. The nucleus also produces the necessary precursors for protein synthesis. The DNA housed within the cell nucleus contains the information necessary for the creation of the majority of the proteins needed to keep a cell functional. While some DNA is stored in other organelles, such as mitochondria, the majority of an organism’s DNA is located in the cell nucleus. The DNA housed in the cell nucleus is extremely valuable, and as such the cell nucleus has a variety of important structures to help maintain, process, and protect the DNA.

Explanation: