Classification systems Flashcards
is cyanobacteria ( blue green algae) a plant species? If not which kingdom do they belong to ?
NO , monera
Earliest system of classification was called _______
Artificial system
Artificial system was based on ___________ characters
gross superficial morphological
what were the gross superficial morphological characters ?
No., shape of leaves, Colour , habit(appearance/growth form)
Artifical system separated the closely related species. True or false ?
True
In Linnaeus system , which plant part was used ?
Androecium
Artificial system gave equal weightage to _________ and __________. Why was this wrong ?
Vegetative and sexual characters. cuz Vegetative charcters are more easily affected by environment.
Who gave the natural classification system?
George Bentham and Joseph Dalton Hooker
what were the characters involved in natural classi. system?
natural affinites of organisms , Ultrastructure , anatomy ,Embryology , phytochemistry
At present , which classification system is accepted ? What is it based on ?
Phylogenetic classification system. Evolutionary relationships
Organisms belonging to same taxa have uncommon ancestors. True or false
False . “COMMON’
Numerical taxonomy
> Carried out using __________
> Based on how many observable characters?
> Each character is given equal importance. True or false?
> Computers
All
True
Cytotaxonomy uses characters like ___________
3 chars.
Chromosome no. , structure , behaviour
Chemotaxonomy is based on ___________ of plants.
Chemical constituents.
Numerical , cyto , chemo taxonomy have become the new sources used by taxonomists these days. True or false
True
