The father of biology is Aristotle.

the father of physics is newton.

the father of chemistry is Dalton ( there are even others but I wrote one person's name )

hope so my answer is useful....^_^ !! 
i wanted to ask, can't we give more than 1 or two answers? Actually i am new here
for 1 question there should be only 2 answers only 
but where we can write the answer. I cannot find any answer box 
ek question post hoa hai abhi tum agar dekho gi usmei nice add it here ek ayega usme likna hai tumhe
father of biology : - Aristotle 
father of physics :- Sir Issac Newton
father of chemistry : - Antoine Lavoisier , Robert Boyle , John Dalton , Jons Berzelius.
   i hope that my answer will help u.............................^_^