Platyhelminthes or Nematoda
There are no flatworms or nematodes at Arches National Park. Flatworms live mostly in water. Flatworms are the simplest animals with bilateral symmetry. The flatworm has three germ layers which form the body. Most flatworms have a gastrovascular cavity where the food is taken in and digested. Nematodes are made up of roundworms which are long. Roundworms are around 1 mm to 120 cm long. Roundworms have two openings. There are about 15,000 species of roundworms known.
Annelida
There are no annelids that live at Arches National Park. There are 15,000 species of
annelids. Annelids have a coelom is divided into different partitions. Body
possesses 3 separate sections, a prostomium, a trunk and a pygidium. Bilaterally
symmetrical and vermiform. Has a nervous system with an anterior nerve ring,
ganglia and a ventral nerve chord. Has no respiratory organs.
annelids. Annelids have a coelom is divided into different partitions. Body
possesses 3 separate sections, a prostomium, a trunk and a pygidium. Bilaterally
symmetrical and vermiform. Has a nervous system with an anterior nerve ring,
ganglia and a ventral nerve chord. Has no respiratory organs.
Mollusca
There are no mollusks that live at Arches National Park. Mollusks are sea shells or snails and sea shells are found around the beach and snails could be found in the desert but there aren't any at this park. Molluscs (Mollusca) are invertebrates that include animals such as squid, octopuses, cuttlefish, nudibranchs, snails, slugs, limpets, sea hares, mussels, clams, oysters, scallops, and many more. The body is made up of two parts. There are around 100,000 species of mollusks. Molluscs exhibit bilateral symmetry.
Arthropoda
Crustacea:
There are no crustaceans that live in Arches National Park since they live in the
water and the water is very shallow at this park. The crustacean's body is made
up of as many as 50 segments. The body usually has three regions the head,
thorax, and abdomen. They also have compound eyes. Lobsters, crabs, shrimp, and
crayfish are eaten by many people.
There are no crustaceans that live in Arches National Park since they live in the
water and the water is very shallow at this park. The crustacean's body is made
up of as many as 50 segments. The body usually has three regions the head,
thorax, and abdomen. They also have compound eyes. Lobsters, crabs, shrimp, and
crayfish are eaten by many people.
Arachnida:
There are no arachnids that live at Arches National Park. This class includes
scorpions, spiders, daddy long legs, mites, and ticks, and certain other
eight-legged land invertebrates. The arachnid body is divided into two parts:
anterior and posterior. Often they hunt or lie in wait for small animals such as
insects. Females may guard eggs or young, which are often born live.
scorpions, spiders, daddy long legs, mites, and ticks, and certain other
eight-legged land invertebrates. The arachnid body is divided into two parts:
anterior and posterior. Often they hunt or lie in wait for small animals such as
insects. Females may guard eggs or young, which are often born live.
Insecta:
There are so many insects that no one knows how many there are exactly. There are around 30 million species of insects alive right now. Insects belong to the Subphylum Hexapoda, a group commonly referred to as hexapods and whose members have six legs. They have three main body parts, a small body, three pairs of legs, two pairs of wings, compound eyes, and a pair of antennas.
Porifera:
There are no sponges that live in Arches National Park since sponges live underwater in the ocean and this park has little shallow pools. Adult sponges can be asymmetrical or radially symmetrical and come in a variety of sizes, colors, and shapes. Sponges occupy both freshwater and marine environments. There are 5,000 to 8,000 known species of sponges.
Cnidaria:
There are no jellyfish that live at Arches National Park since jellyfish live in oceans or marine environments. Cnidarians exhibit two basic structural forms, a medusa and a polyp. The medusa form is a free-swimming structure which consists of an umbrella-shaped body. The polyp is a sessile form which attaches to the seafloor and often forms large colonies. Most cnidarians are carnivorous and feed on small crustaceans.
Echinodermata:
There are no starfish that live at Arches National Park since starfish live underwater in the ocean or in an marine environment. Many echinoderms have radial symmetry. Echinoderms also generally have spines, which are pronounced in sea urchins, but not as obvious in some of the other echinoderms. Instead of blood, echinoderms have a water vascular system. Most echinoderms reproduce sexually. They reproduce by releasing eggs or sperm into the water, which are fertilized andresults in free-swimming larvae that later settle to the bottom. They can also reproduce asexually by regenerating body parts such as arms and spines.