Here we will learn more about kingdoms of classification homework help
Group 3 – Fungi
Cell walls made up of a complex protein called chitin
Eukaryotic cells – either unicellular or multicellular
Mode of nutrition – heterotrophic – may depend on dead and decaying matter and hence are called saprophytes
Some fungi live in a symbiotic relationship with other fungi, algae, and plants. Example lichens
Examples of organisms belonging to this group – yeasts and mushrooms
(Figure 1)
Group 4 – Plantae
Eukaryotes with thick cell walls
Multicellular
Mode of nutrition – autotrophic
Examples of organisms belonging to this group – all plants
Group 5 – Animalia
Eukaryotes without cell walls
Multicellular
Mode of nutrition – Heterotrophic
Examples of organisms belonging to this group – all animals
Five kingdom classification
Classification of the Plantae kingdom
A criterion for classification of the plant kingdom:
1. Does the plant body have well-differentiated and distinct components?
2. Does the differentiated plant have special tissues for the transportation of water and minerals?
3. Does the plant have the ability to bear seeds and whether seeds are enclosed within the fruit?
Based on these criteria, the plants belonging to the Plantae kingdom are classified into various classes.
Class 1 – Thallophyta
Lack of well-differentiated body components
Mostly live in an aquatic environment
Plants belonging to this group are called algae
Class 2 – Bryophyta
Plant body differentiated into stem- and leaf-like structure
Amphibians – live on both land and water
Lack of specialized tissue for transportation of water and minerals
Plants belonging to this class are moss and Marchantia
Class 3 – Pteridophyta
The plant body is well-differentiated into the root, stems, and leaves
Presence of specialized tissue for transport and conduction of water and other substances
Plants belonging to this class are ferns and horsetails
Common characteristic features of class 1, 2
They have naked embryos called spores
They have undifferentiated and hidden reproductive organs and hence are collectively called as cryptograms.
Kingdoms of Classification Homework Help