Earthquakes- definition, related facts

Earthquakes- definition, related facts

Earthquakes (also called quake, tremor, or temblor) A sudden movement of Earth’s crust caused by the release of stress accumulated along geologic faults or by volcanic activity. The earthquake creates seismic waves. We can say that the earthquake is a series of shocks and tremors resulting from the sudden release Read more…

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Phylum-Hemichordata

Phylum-Hemichordata

Phylum-Hemichordata These are recently added as a phylum under non-chordates, earlier these were considered as a sub-phylum under the phylum chordates. They possess a rudimentary structure in the collar region known as stomochord, which is similar to notochord in structure. The hemichordates are marine deuterostome animals, generally considered the sister Read more…

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Phylum-Echinodermata

Phylum-Echinodermata

Phylum-Echinodermata The members of Phylum Echinodermata are exclusively marine animals, till now these are not found as terrestrial or freshwater. About seven thousand living species are included in this phylum. The adults are recognizable by their radial symmetry. The Phylum includes starfish, sea urchins, sand dollars, and sea cucumbers, as Read more…

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Phylum-Mollusca

Phylum-Mollusca

Phylum-Mollusca The second-largest phylum of the animal kingdom after the Arthropod. These are soft-bodied animals. The members of this phylum are called mollusks or mollusks. Around 85000 species of mollusks are recognized. The size of mollusks ranges from microscopic to 20 meters long animals. They show much impact on human Read more…

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Phylum-Arthropoda

Phylum-Arthropoda

Phylum-Arthropoda – (The name is derived from- Atheros-joint, pods-appendages). These are invertebrates include insects, arachnids, myriapods, and crustaceans. Phylum Arthropoda is the largest phylum of the kingdom Animalia. Around two-thirds of all species on earth belongs to the phylum Arthropoda. Characteristics features of phylum Arthropoda Level of organization: The members Read more…

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