Question

The primary advantage of Bentham and Hooker's classification is
A. It is a system whose basis is on evolutionary concepts
B. It is a natural system of classification of all plant groups

Answer 1

Hint:
It is a naturally occurring classification scheme. Plant Kingdom was separated into two groups by Bentham and Hooker: Cryptogamia (non-flowering plants) and Phanerogamia (flowering plants). Phanerogamia is split into the classes Gymnosperm, Monocotyledon, and Dicotyledon. The classification system developed by Bentham and Hooker is based on seed plants and is independent of a species' evolutionary relationships with its progenitors.
An approach for analysing similarities and differences in the number of characters under examination is the natural system of classification. The relationship between the common ancestor and the descendants serves as the basis for this sort of classification.

Complete answer:
George Bentham and Joseph Dalton Hooker provided this categorization, which was printed in "Genera Plantarum." The natural method of classification, developed by Bentham and Hooker, is based on descent from a common ancestor. He separated the seedlings into two categories: Phanerogamia and Cryptogamia (Non-Flowering Plants) (Flowering plants). The phanerogamic plants are further divided into three groups: gymnosperm, dicotyledon, and monocotyledanae (monocotyledonous plants) ( the plants whose seeds are not enclosed in the fruit).
Their method of classifying different species is quite straightforward and useful. Although it has drawbacks including overlooking additional plant traits and failing to distinguish between distinct groupings, it nonetheless helps us comprehend things in a fundamental way.
So, the primary advantage of Bentham and Hookers is that it is a natural system of classification of all plant groups.

Option ‘B’ is correct

Note:
Bentham and Hooker's classification is known as the Natural System. Closely related families were divided, and gymnosperms were positioned between dicots and monocots before monocots. Gymnosperms, monocotyledons, and dicotyledons are the three classifications of seeded plants. Gamopetalous, Monochlamydeae, and Polypetalae are the three subfamilies of dicotyledons. The natural classification system is based on the observation of species in their natural habitat.