BIOL 206 Lecture Notes - Lecture 3: Diploblasty, Triploblasty, Heterotroph
Document Summary
Review: differentiation- genes make cells different, growth determined by what metabolic factors made by your genome, in plants, every cell as long as it is alive can become any kind of cell topitent cells. Eukaryotic heterotrophs: characteristically motile- animals have unique tissue types that enable electrical impulse conduction and movement (nerves and muscles, animals have distinguishing features in their life history. Develop(cid:373)e(cid:374)tal strategies (cid:862)phase cha(cid:374)ge(cid:863)- can have huge change in look and function of animal body. Ex: butterflies have huge phase change from caterpillar to butterfly caterpillar can accumulate a lot more nutrition than butterflies. Can be differences in feeding and reproduction. Adults are not competing with offspring for same resources. Radial symmetry not equal--- (bilateral symmetry has very distinct head) --- radial symmetry allows for limbs to go in any direction to get food. Part of echinoderm phylum means that it has an exoskeleton.
