Question

who discovered the first nucleus

Answer 1

Robert Brown

The nucleus was also described by Franz Bauer in 1804 and in more detail in 1831 by Scottish botanist Robert Brown in a talk at the Linnean Society of London. Brown was studying orchids under microscope when he observed an opaque area, which he called the "areola" or "nucleus", in the cells of the flower's outer layer.

Answer 2

Nucleus was discovered by 'ROBERT BROWN' in 1831.