On which type of plants are Mendel's laws of inheritance not applicable?

Mendel's work remained unrecognized for a long time due to:
$I.$ Communication was not easy.
$II.$ The concept of factors which did not blend was not accepted.
$III.$ The use of mathematics to explain biological problems was unacceptable.
$IV.$ He could not provide any physical proof for the existence of factors.
Choose the right combination.

Gametes produced by a homozygous individual is/are of .... types.

How can the concept of dominance be explained?

Mendel studied several traits in pea plants. Which of the following combinations represents the traits he studied?

In Mendel's experiments,seed coat color,flower nature,flower position,pod color,and stem height are referred to as: