Exoskeleton and Growth
A change in body form during an insect's life cycle.
What is the metamorphosis?
All insects have exactly this many legs.
What are six legs?
The organs crustaceans use to breathe.
What is gills?
The largest group of arthropods, found in every habitat, with three body parts and six legs.
What are insects?
Strong and sticky structures made from silk, used by spiders to catch insects or protect their eggs.
What are webs?
This hard external structure protects arthropods, gives them shape, and helps prevent water loss.
What is the exoskeleton?
These are the defining feature of arthropods—legs, antennae, and mouthparts that bend at connections.
jointed appendages
This is the typical diet of crustaceans like crabs and shrimp.
What is omnivorous?
A group of arthropods that usually live in water, have a body divided into a cephalothorax and abdomen, and breathe through gills.
What are Crustaceans?
Spiders use the silk from these abdominal structures to build webs.
What are spinnerets?
Because their skeleton doesn't grow with them, arthropods must do this to get bigger.
What is molting?
In insects, this middle body segment bears the legs and wings.
What is the thorax?
The diet of most myriapods.
What is herbivores or carnivores?
This group of arthropods includes spiders, scorpions, and ticks.
What are arachnids?
The four life stages of an insect undergoing complete metamorphosis.
What are egg, larva, pupa, and adult?
The exoskeleton is not made of bone or cartilage, but of this specific organic compound.
What is chitin?
This body part contains the digestive and reproductive organs in most arthropods.
What is the abdomen?
the system of tubes that delivers "air directly to the body tissues" in many land arthropods.
What are tracheae?
Centipedes and millipedes belong to this "many-legged" arthropod group.
What are myriapods?
Appendages in arachnids with defensive and sensory functions.
What are pedipalps
This is the primary function of an arthropod's exoskeleton, besides protection.
What is "prevents water loss" or "gives the body shape"?
This term describes an arthropod's body being divided into sections like the head, thorax, and abdomen.
What is a segmented body?
Small openings on the sides of an insect's body where air enters.
What are spiracles?
The body of a crab or lobster is divided into these two main parts.
What are the cephalothorax and abdomen?
The fang-like mouthparts of a spider that contain poison glands.
What are chelicerae?