PLANTAE – NEET EXAM QUESTIONS WITH CORRECT ACTUAL ANSWERS ALREADY GRAD ED A+|NEWEST EDITIO N three types of classification artificial , natural and phylogenetic basis of artificial system of classification - based mainly off vegetative characters or structure of androecium . involve usage of one or few morphological characters such as habit , colour , number shape of leaves etc who gave artificial system? Aristotle , Linnaeus drawbacks of artificial system? 1. closely related species - separate because of few characteristics 2. unnecessary weightage given to vegetative characters which is not nice because those are subject to change because of environment in artificial system , vegetative characters and sexual characters had been given equal weightage. basis of natural system of classification ? ( U APE) consider internal features like - 1) ultrastructure 2) anatomy 3) embryology 4) phytochemistry who gave natural system of classification for ANGIOSPERMS? George Bentham Joseph Dalton Hooker what is the basis of phylogenetic classification? only ones which are based on evolutionary relationships between organisms are accepted. the fossils are important to elucidate the evolutionary relationships who gave phylogenetic classification? Engler and Prantl , Hutchinson , Takhtajan Branches of Taxonomy Phenetics , Cytotaxonomy , Karyotaxonomy , Chemotaxonomy What is phenetics? use numerical methods for evaluating similarities vagera. with the help of computers organisation and analysis of data is sabre important benefit is bohot share characters can be considered at the same time what is cytotaxonomy/ karyotaxonomy? based on cytological structure like chromosome number , structure behaviour vagera what is chemotaxonomy? based on chemical part of plants. e.g. - DNA structure , chemical nature of proteins , crystals , aromatic parts What is a thalloid? plant body not differentiated Algae habitats marine / fresh water moist stones , soils and wood. or as lichens / with animals (on sloth bear) microscopic unicellular algae chlamydomonas colonial algae volvox . mature volvox has bohot siare flagellate cells filamentous algae -
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