phylum arthropoda Flashcards
what is special about this phylum
it is the largest phylum
how many of the total species on earth are arthropods
2/3rd
give their general characteristics
they have organ-level organisation, they are bilateral symmetry they have a chitinous exoskeleton, triploblastic, coelomate, the have segemented body
how is their body externally
they have head thorax, abdomen, they also have joint appendages
name their diff respiratory and sensory organs
gills, book gills, book lungs, tracheal system, and sensory organs like statocysts, antennae, eyes, and statocyst ie balancing organs are present
how is their circulatory system
open type
how does their excretion take place
takes place thro malphigian tubules
what is their sex, development, and fertilisation?
they are dioecious, internal fertilisation, development is indirect or could be direct, they are oviparous
who are used for economic importance?
honey bees ie apis, silk worm ie bombyx, laccifer ie lac insect
give examples of vectors
anopheles, culex, aedes [ mosquitoes]
example of gregarious pest
locusta
example of living fossil
Limulus [king crab]
