Agreed principles and criteria for plants are provided by........

Select the wrong statement about rules of binomial nomenclature $:-$

The scientific name of maize is .........

Who defined species as a group of interbreeding organisms that are reproductively isolated from other such groups?

$Nicotiana$ $sylvestris$ flowers only during long days,while $N.$ $tobacum$ flowers only during short days. If raised in the laboratory under different photoperiods,they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offspring.
What is the best reason for considering $N.$ $sylvestris$ and $N.$ $tobacum$ to be separate species?

To indicate their Latin origin,scientific names are printed in which style?