Chapter 3 : PLANT KINGDOM Flashcards
Whittaker proposed 5 kingdom classification in year________
1969
The earlier systems of classification used only ________ characters such as __________, __________, __________ and ________ etc
Gross superficial morphological, habit, color, number and shape of leaves
Blue green algae is an algae. T/F
F. it is a bacteria
Earlier system was based mainly on ________ or on _________ given by Linnaeus
Vegetative characters, androecium structure
Earlier system given by Linnaeus were natural/artificial, because -
Artificial they separated closely related species and were based on few morphological characters
Artificial system gave equal weightage to ________ and ________
Vegetative and sexual characteristics
Sexual characters and more easily influenced by environment then vegetative characteristics. T/F
F. vegetative characters are more easily influenced
Natural system also consider internal features like - (4)
Ultrastructure, anatomy, embryology and phytochemistry
Natural classification was given by _________ and _________ (NEET)
George Bentham and Joseph Dalton Hooker
Natural system was based on __________ among the organism
Natural affinities
At present, natural system of classification is accepted T/F
F. phylogenetic system is accepted
Classification based on evolutionary relationship is ______ (NEET)
Phylogenetic classification
________ taxonomy is carried out using computers
Numerical
Numerical taxonomy work by assigning number and codes to all __________
Characters
Each character is given weighted importance in numerical taxonomy. T/F
F. equal importance
Hundreds of characters can be considered at the same time in ___________
Numerical taxonomy
Cytotaxonomy is based on -(3)
Chromosome number, structure and behavior
_________ uses chemical constituents of plants to resolve confusion
Chemotaxonomy
First terrestrial plants to possess vascular bundles were-
Pteridophyta
Algae are simple/complex and _______ in structure
Simple, thalloid
Algae are not found in marine environment. T/F
F. found in both fresh water and marine
Example of animal associating with algae -
Sloth bear
Unicellular from of algae ex - (1)
Chlamydomonas
Colonial form of algae ex (1)-(NEET 2017)
Volvox