Multiple choice Which of the following organisms belong to class Arachnida and phylum Arthropoda? Spiders and crabs Lobsters and prawns Spiders and scorpions Shrimps and snails Reveal answer Fill a bubble to check yourself C Correct answer Explanation Spiders and scorpions belong to class Arachnida while crabs, lobsters, prawns and shrimps belong to a group called Crustacea.