"Which" and "who"

On English lesson we used "which" and "who" in sentences. "Who" we use when we speak about people fore example:
This is a girl who is new in class.
Robert is a person who likes vegetables.
This is a woman who was in concert yeterday.
Your friend is a person who loves listening pop music.
My mother is a prrson who likes cooking.
I am a person who loves draving.
Sandra is a girl who doesn't like sport.
This is a girl who wore yellow jacket yesterday.
This is a men who is always lucky.
She is a person who loves pets.
They are people who loves reading books.
We use " which" when we speak abouth clothes and animals for example:
This is a book which have one hero.
This is a meal which I hate.
This is a flower which I gave my mother.
Maks is a dog which likes sleeping.
A cat is a animal which is very lazy.
China is a country which has a lot of people.
This is a mug which is very colourfull.
Polly has a dog which is lucky.
A blue is a colour which I like the most.
A spagetti is a meal which eat in Italy.