Question

complete the table to describe the cells of a zygote, embryo, and fetus.
number of cells contains differentiated cell(s)?
embryo

fetus

zygote

Explanation:

• Zygote: A zygote is a single - celled structure formed by the fusion of sperm and egg. It has not yet undergone cell differentiation.
• Embryo: An embryo is formed from the zygote through cell division. It has multiple cells, and some of these cells start to differentiate into different types (e.g., germ layers).
• Fetus: A fetus has a large number of cells. By this stage, there is extensive cell differentiation to form various organs and tissues.

Answer:

	Number of cells	Contains differentiated cell(s)?
fetus	Many	Yes
zygote	One	No