M1. U4. RF. Flashcards
Biodiversity of animals
The group of animals of the kingdom animalia without a vertebral column
Invertebrates
the group of animals of the Kingdom animalia with a vertebral column
vertebrates
the characteristics of an animal that shows that it can be cut in one or more planes to obtain to mirror images
symmetry
the characteristic of an animal that shows It cannot be cut in any plane to obtain to mirror images
asymmetrical
the type of symmetry present in an animal that can be cut in more than one vertical plane through its Centre to obtain to mirror images
radial symmetry
the type of symmetry present in an animal that can only be cut in one vertical plane through its Centre to obtain to mirror images
bilateral symmetry
the concentration of nerve cells at the anterior part of the body
cephalisation
the outer germ layer in a developing animal embryo
ectoderm
the inner germ layer in a developing animal embryo
endoderm
the germ layer between the ecto and endoderm in a developing animal embryo
mesoderm
the characteristic of animals which indicates that the embryo has two germ layers
Diploblastic
the non-cellular jelly layer that separates the endo and ectoderm
mesoglea
the characteristic of animals which indicates that the embryo has three germ layers
triploblastic
an internal fluid filled cavity in the mesoderm of triploblastic animals
Coelum
triploblastic animals with no coelum in the mesoderm
acoelomate
triploblastic animals which have a coelum but it is not only surrounded by mesoderm tissue
Pseudo coelomates
triploblastic with a true coelum in the mesoderm
Coelomates
the intake of food
ingestion
the removal of undigested remains
Egestion
the type of digestive process which occurs when new food can only be taken in Once all food already ingested has been digested and the undigested remains are egested
discontinuous
the type of digestive tract occurring in coelomate animals that have a mouth and an anus
Through gut
the type of digestive process that can continue during ingestion and digestion
continuous
the phylum in the animal kingdom which includes sponges
porifera
the level of organisation in the phylum porifera when no tissue layers are present
cellular level of organisation
the sedentary Lifestyle of sponges where they are attached to a substrate
Sessile