Ch.28-p.1

Biology I

(Ch.28-Kingdom Animalia)

 

Animal Characteristics

-          eukaryotic

-          multicellular

-          heterotropic-consumers-digest

-          mobile

-          cell membranes

-          reproduce

 

Development

 

Egg + sperm = fertilized egg

 

 

                        Blastula – hollow ball of cells

 

 

                        Gastrula – enfolding of the cell wall

 

 


                                                            Germ cell layers

 


                        Zygote- fertilized

                                    egg in early

development

                        ectoderm

                        mesoderm

                        endoderm

 

 

                             embryo

 

 

 

 

                               fetus

 

 

 

                               baby