Question 2
Which of these is NOT one of the reasons Mendel chose the pea plant?
The right answer is the one marked above.
Its chromosomes are large enough to see easily. Mendel never looked at a chromosome; nobody had identified them as carriers of heredity at the time. The other three were real reasons.
The two reasons that matter most are the ones about pollination: the pea self-pollinates, giving pure lines, but can be cross-pollinated by hand whenever the experimenter wants a particular cross.