Moving and supporting your body weight on land is challenging. Which feature helped arthropods move efficiently in land?
a. Exoskeleton made of chitin
b. Open circulatory system
c. Nervous system with both dorsal and ventral ganglia
d. Excretory system of highly efficient Malpighian tubules

Arthropods are invertebrate animals with articulated locomotor organs, which is the main characteristic of this phylum. The articulated paws allow the animal to perform various movements, very well defined and elaborate. This feature gives these animals not only efficient locomotion, but also aids in their defense and food capture.

They have another striking feature as well, which is the diversely segmented body, but always covered by a chitin cuticle, which represents its exoskeleton. Some have a calcareous shell outside the chitinous exoskeleton, such as crustaceans.

Moving and supporting your body weight on land is challenging. Which feature helped arthropods move efficiently in land? a. Exoskeleton made of chitin b. Open circulatory system c. Nervous system with both dorsal and ventral ganglia d. Excretory system of highly efficient Malpighian tubules

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Moving and supporting your body weight on land is challenging. Which feature helped arthropods move efficiently in land?
a. Exoskeleton made of chitin
b. Open circulatory system
c. Nervous system with both dorsal and ventral ganglia
d. Excretory system of highly efficient Malpighian tubules