ARACHNIDA (arthropoda) By Dan M and Myles. Characteristics of Arachnids Kingdom: Animalia Phylum: Arthropoda Class: Arachnida.

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Presentation transcript:

ARACHNIDA (arthropoda) By Dan M and Myles

Characteristics of Arachnids Kingdom: Animalia Phylum: Arthropoda Class: Arachnida

CHARACTERISTICS Characteristics of a typical arachnid include: -Four pairs of legs (8 legs total) -Four pairs of eyes (8 eyes total) -They have a cephelathorax (a head and thorax fused together) -They don’t have antennas -They perform respiration via book lungs

ORGANISMS Some organisms that are found in the arachnida class are: -Spiders -Ticks -Scorpions

ORGANISIMS SPIDER SCORPION TICK Kingdom: Animalia Animalia Animalia Phylum: Arthropoda Arthropoda Arthropoda Class: Arachnida Arachnida Arachnida Order: Araneae Scorpiones Ixodida Family: Theridiidae Vaejovidae Ixodidae Genus: Latrodectus Vaejovis AmblYomma Species: L. hesperus V. brysoni A. ovale

A. ovale L. hesperus V. brysoni

DIAGRAM OF A SPIDER -Uses 8 legs to move around -Gets food by trapping it in a web -Can spin webs by using a special silk gland -Can kill prey by using it’s Poisonous fangs (females only)

ANATOMY OF A SPIDER -Spiders transport nutrients and oxygen by circulating blood through their bodies -Most arachnids lack muscles in their legs, so they move their legs hydraulically by using the blood pressure in their legs

ANATOMY OF A SPIDER -Spiders exchange gases using an organ called a Book-Lung -A book lung is made of several air pockets surrounded by blood filled tissues -Spiders use book lungs to perform respiration

ANATOMY OF A SPIDER -Spiders can not eat their food in solid form -When a spider catches its prey, it turns it into a liquid by using digestive juices produced in its stomach -The spider sucks up the liquid remains and absorbs its nutrients

LIFE CYCLE -An infant arachnid will hatch from an egg -The infant arachnid grows up into an adult -The adult arachnid will eventually find a mate -An adult male will transfer sperm to a female -Female lays eggs -New arachnids hatch from eggs

FUN FACTS -Almost all arachnids are carnivores -Spiders eat more insects than birds and bats combined, and play a big role in insect population control -Spiders can regenerate lost limbs, just like reptiles

BIBLIOGRAPHY