Lower and Higher Invertebrates with their differences

Lower and Higher Invertebrates

Lower and Higher Invertebrates with their differences The invertebrates are usually classified as Lower Invertebrates and Higher Invertebrates. Lower Invertebrates The lower invertebrates are simple in body organization. They are generally small in size. These are thought to have originated in the main lines of evolution, near the base of the phylogenetic tree of Animal kingdom. Lower Invertebrates includes Protozoa, …

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Characteristics of Invertebrates with examples

Characteristics of Invertebrates

Habitat They are found in seas, freshwater, air, land from snow to desert. 80% are found in terrestrial habitat. Most successful invertebrates of the lands are Arthropods. Protozoans are free-living, parasites or commensals. Sponges and Coelenterates are aquatic animals. Numerical Strength Among 1.25 million animal species, 95% (1.2 million) are invertebrates. Among 1.2 million invertebrates, 1 million are Arthropods. Shape …

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24 Differences between Invertebrates and Vertebrates

Differences between Invertebrates and Vertebrates

The animal kingdom has been divided into two major groups: Invertebrates (Non-Chordates) and Vertebrates (Chordates). Invertebrates are those that do not possess a vertebral column or backbone while Vertebrates are those where vertebral column or backbone is present. These two groups have some differences as follows: S.N. Characteristics Invertebrates (Non-Chordates) Vertebrates (Chordates) 1. Symmetry Radial, Bi-radial or Absent Bilateral 2. …

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