In which stage of Prophase-$I$ do chromosomes condense and appear as thin,thread-like structures?

The second division in meiosis is called

Given below are two statements:
Statement $I$: Chromosomes become gradually visible under light microscope during leptotene stage.
Statement $II$: The beginning of diplotene stage is recognized by dissolution of synaptonemal complex.
In the light of the above statements,choose the correct answer from the options given below:

In plants,meiosis is observed in .........

Find out the wrong statement.

What are the various stages of meiotic prophase-$I$? Enumerate the chromosomal events during each stage.