The sand dollar, sea urchin, brittle star, sea star and sea cucumber are some examples of echinodermata. This family of marine animals lives on the sea floor and is distributed widely from intertidal areas to the darkest depths of the ocean.Know More
There are around 7,000 species that fall under the classification of echinodermata, otherwise known as echinoderms. At least 800 of these can be found in the waters that make up the Great Barrier Reef. The name "echinodermata" comes from the Greek "echinoderma," meaning "spiny skin."
Echinoderms are easy to spot because of their radial symmetry, since all echinoderm species have five arms or multiples of five arms. They also have a calcium carbonate shell covered by skin. Echinoderms have fairly rudimentary respiratory systems that allow them to take oxygen in through tube feet and simple gills.Learn more about Zoology
Wolves, cougars, owls, sea lions and walruses are examples of carnivores, while koalas, pandas, gazelles, zebras and caterpillars are herbivores. Humans, ostriches, box turtles, black bears, red foxes and squirrels are omnivores. Carnivores feed on other animals, herbivores only feed on plant life and omnivores consume plants and animals.Full Answer >
Some examples of parasitism include protozoans, such as amoebas, living in humans and other vertebrate species and parasitic worms that live in and cause disease in humans and animals. Parasitism is the relationship between two species of plants or animals in which one benefits at the expense of the other.Full Answer >
Animals that estivate include snails, crocodiles, hedgehogs, tortoises, birds and lungfish. Estivation is the process by which animals enter a state of dormancy during hot times of year to conserve energy. In order to estivate, animals find places that are cooler than the surrounding air, such as underground burrows or holes in tree trunks. Hot and dry conditions, not a lack of food, usually cause animals to estivate.Full Answer >
Instincts include fear, anger, shyness, curiosity and secretiveness among many more. Instincts are innate in all living organisms, from tiny multicellular bacteria and viruses to mammals and humans. Instincts are complex traits that ultimately help species survive, communicate and reproduce.Full Answer >