Diversity in living organisms 2 (Animalia (Porifera ( Holes 2. non…
Diversity in living organisms 2
Basis of classification
Aristotle(habitat), characteristics particular form, concrete examples used for such characteristics used for hierarchical classification.
@ eukaryotic-membrane-cellular-efficient-isolation-(opposite)-effect-nucleated cells-multicellular organism-classification.
@ division -group division of labour-not identical-specialized functions-basic distry-amoeba
@ food, level of organization
@ develop-organize-specialized organs
Holes 2. non-motile animals attached to solid support that help in bringingwater through the body tp bring food and o2. 3. has hard layer over skeleton. 4. involves minimum differentiation as division into tissues. 4. commonly found in marine. eg)sycon, spongilla, euplectelea.
Live in water 2. Body has 2 layers(outside and inside lining), 3. Live in colonies and have solitary-like span.eg) sea anemone, hydra, jellyfish
Bilateral symmetry 2. Triploblastic(allows inside and outside linings of body and organs to be made 3. no true internal body cavity or coelom 4. flatenned dorsiventally(thus called flatworm) 5. free living parasite eg)Planaria, liverfluke tapeworm
Bilateral symmetry and triploblastic 2. cylindrical body 4. has tissues but no real organs but a sort of body cavity(pseudocoelom) 5. Familiar as parasitic worms causing disease in intestines. eg)ascaris, wuchereria
Bilateral symmetry 2.Triploblastic and has true body cavity(allows true organs to be packed in body structure 3. Extensive organ differentiation in segmental fashion where the segments are lined up from head to tail 4. Found in all water and land. eg) Nereis, earthworm, leeches.
largest group, bilaterally symmetrical, segmented and open circulatory system where blood doesn't flow in well defined blood vessels. 2. coelomic cavity is blood-filled and has jointed legs(meaning arthropod). eg) prawns, butterflies, horse flies, spiders, scorpions, crabs, scorpions, centipede
Bilateral symmetry 2. coelomic cavity is reduced and little segmentation 3. open circulatory system, kidney like organisms for secretion and a foot for movement. Eg)Chiton, octopus, pila, Onia, Snail, Mussels.
Echinodermata1. Echinos-hedgehog and derma-skin(spiny skinned organisms). 2. triploblastic, coelomic cavity and have peculiar water driven system for movement(move with tubular feet) and have hard hard CaCO3 structures as skeletons. Eg) antedon, sea cucumber, sea urchin, starfish
Bilateral symmetry and triploblastic, coelom. 2. notochord(long rod like support structure that runs along the back of the animal separating the nervous tissue from the gut. 3. Notochord provides a place for muscles to attach at ease for movement. 4. Mayn;t have a proper notochord at all stages in their livesor for entire length of animal and are marine. Eg)Balanoglossus, herdmania, amphioxus
True vertebral column and internal skeleton allowing a completely different distribution for muscle attachment used for movement. 2. Bilateral symmetry, triploblastic, coelomic and segmented with complex differentiation of body tissues and organs. They possess notochord, dorsal nerve chord, paired gill pouches and coelomate. Learn remaining in notes.