Question

multicellular organisms show complex way of reproduction.

Answer 1

Answer:

Multicellular organisms cannot reproduce by cell because they are not simple random collection of cells. In them, specialised cells are organized as tissues and tissues are organised into organs, which then have to be kept at different positions in the body. Cell-by-cell division would be impractical.

Answer 2

Complex multicellular organisms are not a random collection of cells. In them, cells are organised into specialised groups/tissues, organs and/or systems, each of which occupy specific locations in the body. ... Hence multicellular organisms need complex methods of reproduction