On which of the following plants did Mendel perform his experiments?

With reference to the Mendelian experiments,which one of the following statements is $INCORRECT$?

Among the following characters, which one was not considered by Mendel in his experiments on pea?

$A$ haploid organism can express both recessive and dominant alleles/mutations because there is/are .........

Statement-$1$: Alleles are slightly different forms of the same gene.
Statement-$2$: The segregation of alleles is a random process and so there is $50$ percent chance of a gamete containing either allele.

Mark the odd one (w.r.t. true breeding line).