Elementary Biology: Plant, Animal, Human |
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abdomen alcohol amount animals anther bacteria bark bean bees biology birds blood body bones bottle butterfly called carbon dioxid cavity cells chemical chemical elements chlorophyll color composed compound corn grain cotyledons covered crops cross-pollination Describe develop digestion egg-cell embryo energy epidermis experiment Fehling's solution fertilized fish floral envelopes flowers food substances forest frog fruit functions germination gill glass grape sugar green growth human hydrogen inches insects kinds known Label Laboratory Study larvæ layer leaf leaves legs lime water liquid living lungs manufacture material membrane microscope mineral matters mosquito moth mouth nucleus nutrients Optional organs ovary ovules oxidation oxygen pansy paramecium petal piece pistil plants pollen grains preparation produced protein protoplasm region root-hairs roots seedling seeds soil soil-water spores stamens starch stem stigma stoma stomata structure surface test tube thistle tube tiny tion trees tumbler veins walls wings woody