Name the things associated with Antonie Van Leeuwenhoek - (6 pictures are given for help and four of them are associated with these clues)
a)Leeuwenhoek was the first to describe these and hence called the "Father of Microbiology"
b)He found many of these (rotifers) in the rainwater collected in ditches and canals
c)Leeuwenhoek was the first to describe plant vessels in this cross section of an ash tree
d)Leeuwenhoek used this to observe microorganisms.