Arthropods -- Animals
Evolutionary Milestones
Arthropods are the first animal to have an enclosed body cavity.
Habitat
Arthropods live on land, in water, or in the air.
Anatomical/Structural Features
Arthropods have jointed appendages and an exoskeleton. They have an open circulatory system and a well-developed brain.
Symmetry
Arthropods have bilateral symmetry.
How They Acquire Nutrients
Arthropods are heterotrophs and can be herbivores, carnivores, or omnivores.
What They Eat
Arthropods can be pollinators, scavengers, parasites, or can control insect populations.
What Eats Them
Arthropods can be eaten by other arthropods birds, mammals, reptiles, amphibians, and fish.
Mobility
Arthropods can fly, crawl, or swim.
Reproduction
Some arthropods can reproduce sexually (internal in terrestrial species and external in aquatic species), some are hermaphrodites, and some are parthenogenesis (a form of asexual reproduction in which a new organism develops from an unfertilized egg).
Development
Arthropods grow by molting, or shedding their old exoskeleton. Their life cycla can be either egg, nymph (small, adult-looking), adult or egg, larva, pupa, adult.
Examples
Some examples of arthropods include bees, ants, beetles, mosquitoes, and spiders.
Arthropods are the first animal to have an enclosed body cavity.
Habitat
Arthropods live on land, in water, or in the air.
Anatomical/Structural Features
Arthropods have jointed appendages and an exoskeleton. They have an open circulatory system and a well-developed brain.
Symmetry
Arthropods have bilateral symmetry.
How They Acquire Nutrients
Arthropods are heterotrophs and can be herbivores, carnivores, or omnivores.
What They Eat
Arthropods can be pollinators, scavengers, parasites, or can control insect populations.
What Eats Them
Arthropods can be eaten by other arthropods birds, mammals, reptiles, amphibians, and fish.
Mobility
Arthropods can fly, crawl, or swim.
Reproduction
Some arthropods can reproduce sexually (internal in terrestrial species and external in aquatic species), some are hermaphrodites, and some are parthenogenesis (a form of asexual reproduction in which a new organism develops from an unfertilized egg).
Development
Arthropods grow by molting, or shedding their old exoskeleton. Their life cycla can be either egg, nymph (small, adult-looking), adult or egg, larva, pupa, adult.
Examples
Some examples of arthropods include bees, ants, beetles, mosquitoes, and spiders.