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Themes > Science > Botanical Sciences > Major Divisions Of Life > Kingdom Animalia |
Multicellular animals not usually included in botany courses; without cell walls and without photosynthetic pigments, forming diploid blastula; there are more than one million species of animals in at least 30 phyla, more species than all the other kingdoms combined; more than half of all animal species are insects (800,000 species), and beetles (300,000 species) comprise the largest order of insects (one fifth of all species based on a total of 1.5 million); if all the species of plants and animals on earth were lined up at random, every 5th species would be a beetle. |
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