Question

Engler and Prantl published a phylogenetic ecosystem in monograph
A. Die Naturlichen Pflanzenfamilien
B. Historia Plantarum
C. Genera Plantarum
D. Origin of Species

Answer 1

Hint:
The two German botanists were Engler and Prantl. Engler felt the monocot was more primitive than the dicot.

Complete answer:
Engler and Prantl provided a phylogenetic scheme focused on the notion of evolution in ascending order from less specialized to more specialized classes. Gymnosperm and angiosperm come under spermatophytes. Angiosperms come from potential gymnosperms such as coniferales. The gymnosperm positions are not uncommon. Angiosperms are known as polyphyletic. Monocotyledons are divided into twelve series from Pandanales to Microspermae. It is based on the classification system of Eichler. In the Die Naturlichen Pflanzenfamilien, the work of Engler and Prantl was published.

Engler and its collaborator Karl Prantl carried out a monograph, "Die Naturlichen Pflanzenfamilien" on a twenty volume basis, covering all the recognized genera of plants, from algae to phanerogams, as well as the key for plant identification.

Historia Plantarum is a botany book written by John Ray.
Genera Plantarum has become the publication of Bentham and Hooker's research. Origin of Species was published by Charles Darwin.
Therefore, the correct answer is option (A).

Note:
A German botanist, Adolf Engler, was well known for his phytogeography and plant taxonomy work, as "Die natürlichen Pflanzenfamilien," edited jointly by Karl von Prantl, which consisted of twenty-three volumes. His classification scheme, the Engler scheme, is still commonly used by many herbariums, including many writers of manuals and flora.