23 Questions
What is the name of the group that includes spiders, scorpions, and ticks?
Chelicerata
Which of the following characteristics is NOT typical of trilobites?
They have three pairs of legs
What is the function of pedipalps in arachnids?
They are used for all of the above
What is the name of the oxygen-carrying pigment in spider blood?
Hemocyanin
What is the name of the openings in a spider's heart where blood reenters?
Ostia
What is the function of silk glands in spiders?
To make silk
What is the approximate percentage of all animal species that belong to the Phylum Arthropoda?
3/4
What is the main function of the exoskeleton in arthropods?
Protection and support
What is the term for the process of shedding the exoskeleton in arthropods?
Ecdysis
What is the characteristic of the nervous system in arthropods?
Ventral
What is the composition of the exoskeleton in arthropods?
Chitin and protein
What is the characteristic of the body cavity in arthropods?
Coelomate
What is the function of maxillae in crayfish?
To tear food
What is the function of green glands in crayfish?
To filter wastes from blood and help with salt balance
What is the main function of ostia in crayfish?
To allow blood from the dorsal sinus to reenter the heart
What is the function of swimmerets in crayfish?
To swim, exchange gases, and protect eggs/young
What is the function of pedipalps in scorpions?
Modified into claws
What is the function of book lungs in scorpions?
To breathe
What is the primary function of copepods in marine ecosystems?
To serve as food for many marine animals
What characteristic is shared by all uniramians?
Having antenna, mandibles, and unbranched appendages
What is the primary defense mechanism of centipedes?
Coiling up and releasing venom
What do millipedes primarily feed on?
Decaying vegetation
What is the primary reason for the exoskeleton in myriapods?
To prevent desiccation and water loss
Test your knowledge of Phylum Arthropoda, which includes insects, spiders, scorpions, and more. Learn about the characteristics of arthropods, including jointed appendages, segmented bodies, and external exoskeletons. Discover the unique features of this phylum that makes up 3/4 of all animal species.
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