The process which transforms zygote to blastula is called ..................

Explanation

The process which transforms the zygote into a blastula is called **cleavage**.

### Step-by-Step Solution:

1. **Formation of Zygote**: The process begins with fertilization, where the sperm and egg combine to form a zygote, which is a single-celled structure.

2. **Cell Division (Mitosis)**: The zygote undergoes a series of mitotic divisions. This means that the zygote divides to produce two cells.

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