An embryo is made up of a single cell.

The statement "An embryo is made up of a single cell" is False.

Explanation:

Initially, reproduction is crucial for the continuation of species, and it involves the fusion of male and female gametes, resulting in the formation of a zygote. The zygote, which is a single cell, undergoes several stages of development. Through the process of cell division (mitosis) and cell differentiation, the zygote transforms into a multicellular structure known as the embryo.

As the zygote divides, it forms a cluster of cells that eventually specialize to take on different functions, leading to the formation of tissues and organs in the developing organism. This is a part of the complex process of embryonic development which is crucial for the growth of an organism.

Therefore, an embryo is not made up of just one cell but is a multicellular entity formed through repeated divisions and differentiation of the original single zygote cell.