Asked by tatiana vayserberg on Jul 16, 2024
Verified
An arachnid differs from a crustacean because
A) arachnids have book gills.
B) arachnids are mostly aquatic and crustaceans are mostly terrestrial.
C) only arachnids shed their exoskeletons.
D) arachnids have two major body segments, the cephalothorax and abdomen, while crustaceans have three body segments.
E) arachnids have four pairs of walking legs.
Arachnid
Group of arthropods that includes spiders and scorpions.
Cephalothorax
A body region found in arachnids and some crustaceans, where the head and thorax are fused into one unit.
Book Gills
Respiratory organs found in horseshoe crabs and some arachnids, consisting of leaf-like structures stacked on top of each other.
- Explore the traits of arthropods, including the composition of their jointed extremities, protective exoskeleton, and divided body layout.
Verified Answer
GW
Genel WilliamsJul 23, 2024
Final Answer :
E
Explanation :
Arachnids, such as spiders and scorpions, have four pairs of walking legs, distinguishing them from crustaceans, which typically have more than four pairs of legs. This is a fundamental difference in their morphology.
Learning Objectives
- Explore the traits of arthropods, including the composition of their jointed extremities, protective exoskeleton, and divided body layout.
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