Question

18. The primary advantage of Bentham and Hookers 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

Answer:

Bentham and Hooker gave the natural system of classification in which the seeded plants are divided into dicotyledons, gymnosperms and monocotyledons. The dicotyledons are divided into Polypetalae, Gamopetalous, and Mmonochlamydeae. This classes where further divided into cohorts. The classification is based on the natural observation of species. The placement of Gymnospermae between Dicotyledonae and Monocotyledones was considered as a demerit of this classification. Thus, the correct answer is option B.

Answer 2

Answer:

(B) It is a natural system of classification of all plant groups​.

Explanation:

This classification is given by George Bentham and Joseph Dalton Hooker which was published in the "Genera Plantarum" .The Bentham and Hooker classification or the natural system of classification is based on the descent from a common ancestor. He divided the seeded plants into Cryptogamia ( Non- Flowering plants) and Phanerogamia (Flowering plants). The phanerogamic plants are further classified as monocotyledanae ( Monocotyledonous plants), Dicotyledonae (Dicotyledonous plants) and gymnosperm ( the plants whose seeds are not enclosed in the fruit).

Their system of classification is very simple and a practical approach to classify various species. Although it has its own demerits of not considering other characteristics of plants and missing the clear cut differentiation of the groups it allows us to clearly understand things at a basic level.

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