Unit 5 Animal I

Major characteristics of animal kingdom

Multicellular, Hetero, Feeding strategies- filter/herbivore, predators, parasites, detritivores, internal digestion(most), movement-sessile/motile, and NS(most)

Parasites vs Detritivores

Para- inside(endop) another organism our outside(ectop) get food and energy from host
Detr- feed on dead organic matter

Sessile

attached to the base and not moving

Animal monophyly

Common set of ECM, unique intracellular junctions, similarity in organization and function of some development genes, gene sequence.

Invertebrates vs Vertebrates

In-no backbone vs has backbone

Monoblastic

1 germ layer (no clearly differentiated tissue type or embryonic cell layer)

Diploblastic

2 layers inside endoderm outside ectoderm

Triploblastic

3 layers endo,meso,ecto

Pro vs Deu

Protostomes   mouth first blastopore-> mouth

Deuterostomes - mouth second blastopore-> anus

Body Symmetry

Asymmetry

Spherical symmetry: 2 mirror images

Radial symmetry- a pizza 2 mirror images

 Bilateral symmetry: (human)

 

Bilateral symmetry

Anterior vs posterior : top vs. bottom

Dorsal vs Ventra(side with mouth)l: back vs belly

Cephalization

 

Cephalization

central organs concentration in the head area all 5 sense in plan (head)