Download Skeletal System

Reproductive System
Function: pass on genes
Types of Reproduction:
*Asexual
~offspring are genetically identical to their parent
~offspring produced rapidly
~individuals don’t have to find a mate
~species can’t change quickly with a changing environment
~types include budding, fragmentation, gemmules, pedal laceration
~Porifera, Cnidaria, Platyhelminthes
*Sexual
~offspring are not genetically identical to their parents
~species can change quickly with a changing environment
~individuals need to find a mate
~a lot of energy is put into courtship rituals
~hermaphroditic – individual has both male and female reproductive parts (Porifera,
Platyhelminthes, Annelida)
~Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Mollusca, Arthropoda,
Echinodermata, Chordata
Types of Fertilzation:
*external – out of body
~Porifera, Cnidaria, Platyhelminthes, Annelida, Mollusca (except octopus),
Echinodermata, Oseichthyes, Amphibia
*internal – in body
~Nematoda, Mollusca (octopus), Arthropoda, Chondricththyes, Reptilia, Aves,
Mammalia
Types of Development:
*external – out of body
~Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Mollusca, Arthropoda (not
scorpions), Echinodermata, Chondrichthyes (most), Osteichthyes, Amphibia, Reptilia,
Aves
*internal – in body
~Mammalia
Interactions with Other Body Systems:
*circulatory system brings blood/nutrients to developing fetus
*controlled highly by endocrine system