What is phylogeny?

What do you mean by "Ontogeny repeats phylogeny" ? Is it true or false? Support your answer with two evidences

Phylogeny is

Phylogeny is

Phylogeny is

What do you mean by "ontogeny repeats phylogeny?"

“Ontogeny repeats phylogeny” was proposed by-

“Ontogeny repeats phylogeny.” Explain.

Ontogeny recapitulates phylogeny. This is

Ontogeny recapitulates phylogeny. Discuss.