Vocabulary
organism, structure, function, behavior, stem, seed, structures, external, internal, stigma, ovary, sepal, stamen, petal, leaf, reproduction, pollinate, photosynthesis, predator, roots, vascular, non-vascular, organism, living, stimuli, reproduction, growth development, vertebrates, invertebrates, classified, characteristic, aquatic, scales, cold blooded, warm blooded, external, internal, mammal, reptile, amphibian, structure, function, organism, function, structure, energy, vertebrate, invertebrate, backbone, internal, external, skeletal system, heart, brain, lungs, nutrient, carbon dioxide, oxygen, skin, stomach, mammals, fish, reptiles, amphibians, birds, exoskeleton, external, structure, function, adapt, environment, predator, prey, germinate, root, stem, leaf, flower, fruit, thorn, prickle, fertilizer, photosynthesis, defense mechanism, plant, thorn, internal structure, external structure, archaic, reproduce, seed, spore, vascular, nonvascular, seedless, fern, pollinator, pollinate, nectar, stigma, stamen, ovule, ovary