Arachnids and Insects
Arachnids and Insects share some common traits
*Both are Arthropods
*Both are invertebrates
*Both have segmented bodies
*Both have jointed legs
*Both have exoskeletons made of chitin
*Both are invertebrates
*Both have segmented bodies
*Both have jointed legs
*Both have exoskeletons made of chitin
Arachnids and Insects also have a number of differences
Arachnids have...
*8 legs
*2 body segments: cephalothorax and abdomen
*No wings
*No antenna, they use leg bristles to sense
*Simple eyes, one lens, usually 4 pairs but sometimes fewer
*Do not have extensor muscles
*Undergo molting
*Are mainly carnivorous
*Use chelicerae to consume food
*Have internal fertilization
*Are mostly terrestrial
*About 100,000 different species
*8 legs
*2 body segments: cephalothorax and abdomen
*No wings
*No antenna, they use leg bristles to sense
*Simple eyes, one lens, usually 4 pairs but sometimes fewer
*Do not have extensor muscles
*Undergo molting
*Are mainly carnivorous
*Use chelicerae to consume food
*Have internal fertilization
*Are mostly terrestrial
*About 100,000 different species
Insects have...
*6 legs
*3 body segments: head, thorax and abdomen
*Most have wings, one or two pairs located on the thorax
*Antenna, used to sense
*Compound eyes, many lenses, 2 pairs of eyes
*Have extensor muscles
*Undergo metamorphosis
*Are carnivorous, omnivorous or herbivorous
*Use mandibles to consume food *Rarely to never have internal fertilization
*Are found in all habitats
*Over a Million different species
*6 legs
*3 body segments: head, thorax and abdomen
*Most have wings, one or two pairs located on the thorax
*Antenna, used to sense
*Compound eyes, many lenses, 2 pairs of eyes
*Have extensor muscles
*Undergo metamorphosis
*Are carnivorous, omnivorous or herbivorous
*Use mandibles to consume food *Rarely to never have internal fertilization
*Are found in all habitats
*Over a Million different species