Kingdom Animalia: Diversity and Phylum Classification

An introduction to ANIMAL DIVERSITY
 Characteristics of KINGDOM ANIMALIA
 Cell type:- Eukaryotic
 Cell wall:- Absent
 Nuclear membrane:- Present
 Body organization:- Tissue/ organ/ organ system
 Mode of nutrition:- Heterotrophic (Holozoic and Saprophytic)
 Reproduction:- Asexual and Sexual

, Basis of classification for Animalia
 Levels of classification
 Cellular level:- At this level, organisms comprise one or more cells.
 Tissue level:- Organisms with tissue-level comprise one or more tissues like jellyfish, etc
 Organ level:- At this level, animals comprise one or more organs.
 Organ system:- Animals with organ-level organization have specialized organs for various functions like
Aschelminthes to Chordates.
 Circulatory is of two types:-
o Open type:- Blood is pumped out of the heart.
o Closed type:- Blood is passed through vessels