The binomial system of nomenclature was initially introduced by .........

Which study is essential for the identification and study of diverse organisms in the biosphere?

$Nicotiana \ sylvestris$ flowers only during long days and $N. \ tabacum$ 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 $N. \ tabacum$ to be separate species?

The first great taxonomist was

Which of the following literature refers to the classification of organisms?

$ICBN$ stands for