Cells, tissues, organs, and organ system make up the entire ?

organism

Explanation:

Cell is the basic unit of heredity. The body is made up of specialized cells. Red blood cell,white blood cell,prokaryote and eukaryotes

Cells comes together to form body tissues such as epithelia tissue,phone,xylem tissues.

Organ are group of specializes tissue coming together and performing similar function example is leaf, stem,vine,heart, brain

System are group of organs coming together to perform a particular task example is the digestive system, nervous system

System comes together to make the entire organism example is human, bacteria,fungi.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

because the light is a great source of energy for the plants to survive. (i hope this )