General Arthropod Facts
What is the name of the phylum to which arthropods belong?
Arthropoda
What type of symmetry do arthropods have?
Bilateral Symmetry
During which major event did arthropods first appear?
Cambrian Explosion
How many legs do insects have?
6
What role do arthropods like bees and butterflies play in ecosystems?
Pollination
What percentage of animal species are arthropods?
80%
Which part of an arthropod's body contains legs and wings?
Thorax
What type of organism is considered the evolutionary ancestor of arthropods?
Lobopodians (worm-like creatures)
How many legs do arachnids have?
8
What do scavenging arthropods, such as certain beetles and flies, contribute to ecosystems?
Decomposition and nutrient recycling
What material is the exoskeleton of arthropods made of?
Chitin
Which body segment is responsible for movement and is where legs and wings are typically attached.
Thorax
What is the name of the first arthropod group to evolve wings?
Insects
How many legs do crustaceans typically have?
10
How does climate change affect arthropods?
It disrupts breeding cycles and forces species to migrate to new areas.
Which group of arthropods has the most species?
Insects
What is the name of the liquid that replaces blood in arthropods?
Hemolymph
What evolutionary development helped arthropods colonize land about 420 million years ago?
Respiratory systems
Which group of arthropods includes animals with two pairs of antennae?
Crustaceans
How does urbanization impact arthropod habitats?
It removes microhabitats and fragments habitats, reducing species diversity.
What is the name of the process in which arthropods shed their old exoskeleton and grow a new one?
Molting
What is the main purpose of an arthropod's exoskeleton?
The exoskeleton provides structural support, protection from predators, and prevents water loss
What was the role of trilobites in arthropod evolution?
Considered the common ancestor of many arthropod groups
What two groups of arthropods has the characteristic of having a fused head and thorax, referred to as a cephalothorax?
Crustaceans and Arachnids
What is the effect of pesticide use on arthropod populations?
Pesticides harm beneficial insects, reducing plant variety and causing ecological imbalances.