Phenetic classification is based on _______________.
sexual characteristic
the ancestral lineage of existing organisms
observable characteristics of existing organsims
dendrograms based on DNA characteristics
Top - shaped multicilate male gametes and the mature seed which bears only one embryo with two cotyledons, are characterisitcs features of _____________.
polypetalous angiosperms
gamopetalous angiosperms
conifers
cycads
Phylogenetic system of classification is based on __________.
evolutionary relationships
morphological features
chemical constituents
floral characters
Linnaeus evolved a system of nomenclature called ____________.
mononomial
vernacular
binomial
variety
Binomial nomenclature means _______________.
one name given by two scientists
one scientific name consisting of a generic and a specific epithet
two names,one Latinised, other of a person
None of the above
Species is ____________.
basic unit of classification
unit in the evolutionary histroy of a tree
specific class of evolution
not related to evolution
Basic unit or smallest taxon of taxonomy / classification is _____________.
species
kingdom
family
Phylogenetic classification is based on _______________.
utilitarian system
habits
overall similarities
common evolutionary descent
Sequence of taxonomic categories is _____________.
class - phylum - tribe - order - family - genus - species
division - class - family - tribe - order - genus - species
division - class - order - family - tribe - genus - species
Phylum - order - class - tribe - family - genus - species
An important criterion for modern day classification is ______________.
resemblances in Morphology
anatomical and physiological traits
breeding habits
presence or absence of notochord
