Is it true sexual reproduction is found in all organisms?

No, not all organisms reproduce sexually. Some organisms, such as bacteria, reproduce asexually through processes such as binary fission.

Sexual reproduction is a method of reproduction in which the genetic information from two individuals is combined through the fusion of gametes, such as sperm and eggs, to form a new organism. This is a common method of reproduction among animals and plants. However, not all organisms reproduce sexually. Many single-celled organisms such as bacteria reproduce asexually through a process called binary fission, in which a single cell divides into two identical daughter cells. Also, many multicellular organisms such as some species of algae, fungi, and some plants can reproduce asexually as well.