Phylogenetically isolated from other mammals monotremes-others diverged 190 mya marsupials-placentals diverged cytosine mya unmatched reproductive patterns monotremes egg laying marsupials highly altricial young, simple placenta I. Monotremata(ORDER) ballpark names platypus and spiny anteater Families Tachiglossidae, Ornithorhynchidae # species 3 Distribution Australia, Tasmania, New Guinea (echidna) 1. general characteristics of the order 1. Morphologically unique 2. Have many reptilian characteristics 3. Birdlike skull with elongated rostrum 4. No teeth - Chew aliment with the spittle and bony denture at roof of oral fissure (echidna) or horny gums (platypus) 5. pectoralis girdle splayed as in reptiles 6. Pelvic girdle mammal-like 7. Epipubic cram that come up from the hip joint along the ventral spring up 2. Reproduction 1. post eggs 2. Incubate them like birds 3. Have mammary glands and take out milk 4. No nipples 5. Milk is secreted onto the abdominal fur (platypus) or into a impermanent pouch and licked off the beat (echidna) 6. immense periods of maternal care 7. 1 offspring/ form 3. Echidna(CLASS) 1. Morphology 1. Round, fat automobile trunk 2. Short, summary spines covering body 3.
Tube-like rostrum covered with leathery skin 4. Long language coated with mucous ! 5. withdraw limbs (short, powerful, claws) 6. Small eyes 7. Females devour a temporary pouch for carrying eggs and babies; structure whitethorn be back up by epipubic bones 2. bionomics and behavior 1. Solitary 2. Crepuscular 3. Live in burrows 4. slippery eyesight but great sense of smell 5. neutralise predators by 1) Digging down...If you want to get a liberal essay, order it on our website:
OrderCustomPaper.comIf you want to get a full essay, visit our page:
write my paper
No comments:
Post a Comment