Justify each of the following statements.
It is said that every multicellular organism has come from a single cell.

Explanation

### Step-by-Step Solution:

1. **Understanding the Statement**: The statement "every multicellular organism has come from a single cell" refers to the concept of development in biology. It emphasizes that all complex organisms start their life cycle from a single cell.

2. **Zygote Formation**: Every multicellular organism begins as a zygote, which is formed when a sperm cell fertilizes an egg cell. This zygote is indeed a single cell.

3. **Cell Division**: After the formation of the zygote, it undergoes a process called cell division (mitosis). This process allows the single zygote to divide into multiple cells, which will eventually form the entire organism.

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