Question

What is embryo and fertilisation

Answer 1

Answer:

In general, in organisms that reproduce sexually, an embryo develops from a zygote, the single cell resulting from the fertilization of the female egg cell by the male sperm cell. ... After this time the embryo is referred to as a fetus.

Answer 2

Answer:

the embryo is multicellular as in this stage cell division has already commenced. The mitosis of the zygote results in to the formation of the embryo.

Fertilization is a complex multi-step process that is complete in 24 hours. The sperm from a male meets an ovum from a female and forms a zygote; this is the point in which pregnancy begins and leads to a 280-day journey for a female. There are two ways to track this process, and they differ by the day counting begins.