What different criteria are used to classify plants?
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On the basis of presents or absent of flower it divided into two types of plant
Flowering plant or Phenerogames
Non flowering plant or Cryptogames
Phenerogames include only Flowering plant where cryptogames include only Non -flowering plant .
In phenerogames include Division like Angiosperm in which all the plant having presents of flowers as reproductive structure .
In cryptogames include all non flowering plants like Gymnosperm , Bryophyte ect.
In division angiosperm plant are divided into 2 class Dicotyledone or Dicot and Monocotyledone or Monocot on basis of presents of number of cotyledons .
Plant Kingdom – Plantae
Plantae is the plant kingdom which includes all plants on the earth. They are multi-cellular eukaryotes. They consist of cell walls and chlorophyll. Plants are photosynthetic. Hence, they have an autotrophic mode of nutrition. The plant kingdom is a vast group; therefore, the kingdom is further classified into subgroups. Level of classification is based on the following three criteria:
1.Plant body– whether the body has well-differentiated structures or not.
2 Vascular system-whether the plant has vascular system for transportation of substances or not.
3.Seed formation– whether the plant bears flowers and seeds or not; if it does, then whether it is enclosed within fruits or not.
Considering all these factors, the plant kingdom has been divided into two groups and five subgroups.
The two subgroups are:-
Cryptogams- reproduction through spores and no seed formation. They include subgroups Thallophyta, Bryophyta and Pteridophyta
Phanerogams-they have specialised reproductive organs and they produce seeds. Gymnosperms and Angiosperms belong to this group.
The 5 subgroups are as follows:
A)Thallophyta- body not differentiated into roots and stem,no vascular system,no seed formation
B)Bryophyta-body differentiated but lack vascular system,no seed formation
C)Pteridophyta- well- differentiated body, vascular system present, no seeds formation
D)Gymnosperms- well-differentiated body with vascular system, seeds are naked(not enclosed in a fruit)
E)Angiosperms- well-differentiated body with vascular system, seeds are covered(enclosed in a fruit)
Flowering plant or Phenerogames
Non flowering plant or Cryptogames
Phenerogames include only Flowering plant where cryptogames include only Non -flowering plant .
In phenerogames include Division like Angiosperm in which all the plant having presents of flowers as reproductive structure .
In cryptogames include all non flowering plants like Gymnosperm , Bryophyte ect.
In division angiosperm plant are divided into 2 class Dicotyledone or Dicot and Monocotyledone or Monocot on basis of presents of number of cotyledons .
Plant Kingdom – Plantae
Plantae is the plant kingdom which includes all plants on the earth. They are multi-cellular eukaryotes. They consist of cell walls and chlorophyll. Plants are photosynthetic. Hence, they have an autotrophic mode of nutrition. The plant kingdom is a vast group; therefore, the kingdom is further classified into subgroups. Level of classification is based on the following three criteria:
1.Plant body– whether the body has well-differentiated structures or not.
2 Vascular system-whether the plant has vascular system for transportation of substances or not.
3.Seed formation– whether the plant bears flowers and seeds or not; if it does, then whether it is enclosed within fruits or not.
Considering all these factors, the plant kingdom has been divided into two groups and five subgroups.
The two subgroups are:-
Cryptogams- reproduction through spores and no seed formation. They include subgroups Thallophyta, Bryophyta and Pteridophyta
Phanerogams-they have specialised reproductive organs and they produce seeds. Gymnosperms and Angiosperms belong to this group.
The 5 subgroups are as follows:
A)Thallophyta- body not differentiated into roots and stem,no vascular system,no seed formation
B)Bryophyta-body differentiated but lack vascular system,no seed formation
C)Pteridophyta- well- differentiated body, vascular system present, no seeds formation
D)Gymnosperms- well-differentiated body with vascular system, seeds are naked(not enclosed in a fruit)
E)Angiosperms- well-differentiated body with vascular system, seeds are covered(enclosed in a fruit)
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Flowering plant or Phenerogames.
Non flowering plant or Cryptogames..
Hope this helps you out!!
Non flowering plant or Cryptogames..
Hope this helps you out!!
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