Arthropoda Flashcards
joint segments of arthropods
appendages
necessary to allow for growth and required hormonal control
molting
open system of sinuses called
hemocoel
difference of uniramous and biramous
uniramous - comprises a single series of segments attached end-to-end (unbranched yung appendages)
biramous - branches into two, and (endopod, exopod) (unique sa crustaceans)
slight or no metamorphosis (silverfish, springtail)
ametabolous
no pupal stage, larva to adult (cicadas, scales, aphids)
hemimetabolous
complete metamorphosis like butterfly
holometabolous
arthropods shed their exoskeletons as they grow
ecdysis or moulting
an open body cavity in which blood flows and bathes the tissues and organs
hemocoel
a fluid analogous to the blood in vertebrates, that circulates in the interior of the arthropod (invertebrate) body, remaining in direct contact with the animal’s tissue
hemolymph
tagmata of subphylum chelicerata
cephalothorax (prosoma)
abdomen (opisthosoma)
Tachypleus sp
Horseshoe crab
shrimps have ___ pairs of jointed legs on the thorax, 3 pairs for walking and 2 pairs for feeding
5
On the abdomen, ___ pairs of appendages are used for swimming (swimmerets)
5
tracheal system
air tubes for direct oxygen transport to tissues and allow high metabolic rates but may limit body size
terrestrial arthropods
