Write RScript to create a recursive function to implement Fibonacci series. 

Create a dataframe Student, perform below mentioned operation on a data frame. Explain with proper example.  a) Write R Code to convert all the values in a student dataframe into Matrix. b) Select the subset of Dataframe c) Sort the data within frame d) ...

______ is used to identify whether the provided dataset is a Dataframe. 

Write code to create vectors, then convert vectors into list and further list to dataframe.