Answer:

Hello,

Explanation:

Zygote

• It is formed by the fusion of the nuclei of the sperm and egg.
• It is a unicellular structure.

Foetus:-

• It is the stage of the embryo which nearly resembles a human being.
• It is a multicellular structure

Embryo:-

• The process of formation of embryo is known as embryogenesis.
• Embryo is multicellular

I hope you understand

Thank You

The zygote is the initial stage in baby development.

foetus, It is the stage of the embryo which nearly resembles a human being.