While aquatic arachnids utilize coxal glands for excretion,most terrestrial forms use __________ which conserve water.

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Quizplus · Accepted Answer

Malpighian tubules are found in terrestrial arachnids such as spiders and scorpions. They are the main excretory structures and function to conserve water by reabsorbing it from the excretory waste material. Nephridia are found in aquatic arachnids and function similarly to the malpighian tubules in terrestrial forms, but they are not as effective at conserving water. Diffusion and green glands are found in other arthropods such as crustaceans and insects, and antennal glands are found in some crustaceans for maintaining osmotic balance.

While Aquatic Arachnids Utilize Coxal Glands for Excretion,most Terrestrial Forms