The Individual in the Animal Kingdom |
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action actual adaptation adult aggregate differentiation alga animal individuality asexual reproduction become blastomeres body brain Catenata cells Clathrina Clavellina coenocytic collar-cells colony continuance definite dependent divided division of labour Dogiel embryo Evolution exist fact fertilized flagella flagellates flagellum flatworms functions fungus grade of individuality green cells green plants grow growth halves Haplozoon harmonious heterogeneity higher animals higher individual homologous hydroid independence insects internal differentiation kind of individuality layer lichen limits living substance living things mass of protoplasm material means metamorphosis Metazoa method molecules moth nature Nemertine nerve-cell nucleus nutritive obvious once organism origin outer ovum parasitism perfect individual Pilidium polyps primitive produced Prof properties protoplasm Protozoa race regeneration relation reproduction result second grade seen separate sexual act single cell single individual species sponge structure surface surface-tension Sycon tissue units Volvocidae Volvox whole Yucca Zoologist