-
What are the three respiratory or gas exchange structures in arthropods? Name which subphylum goes with each.
- Tracheal system - uniramia (insects, centipedes+milipedes)
- Book lungs - Spiders (Chelicerata)
- Gills - Crustacea
-
What is a tracheal system? What animal has this system?
- Extensive network of thin-walled tubes that branch into every part of the body.
- Insects.
-
All arthropods have ____ circulatory systems. That means they have no ____ or _____ of _____ .
- open veins
- separation
- fluids
-
What is ecdysis? How does it happen?
Molting. Enzymes dissolve old cuticle. Animal swallows water-- increased blood value. Cuticle splits and animal pulls itself out of its exoskeleton. Hides until new shell hardens.
-
Complete metamorphosis? Example?
- egg -> larva -> pupa -> adult
- ex: egg -> caterpillar ->chrysalis -> butterfly
-
Incomplete metamorphosis? Examples?
- egg -> nymph -> adult
- ex: mites, grasshoppers, cockroaches
-
Direct development? examples?
- egg -> juvenile -> adult
- ex: crayfish. young look like adult.
-
Arthropods have ______ exoskeletons.
chitinous
-
Arthropoda are segmented but they do not have ________
septa
-
Arthropods have reduced competition through _________
metamorphosis
-
One difference of Arthropods from annelids: the absence of ________
cilia
-
examples of each subphylum:
Chelicerata -
trilobita -
crustacea -
uniramia
- arachnids, scorpions, horseshoe crabs, mites, ticks
- trilobites
- crayfish, lobsters, isopods
- insects, centipedes, millipedes
-
How many appendages do chelicerates have?
Chelicerata have 6 pairs of appendages
-
What subphylum has pedipalps?
Chelicerata
-
What is the tagmata of spiders and crustaceans?
cephalothorax and abdomen
-
What is the tagma of uniramians?
Head, thorax, abdomen
-
Which subphylum uses antennal or green glands? What are these glands used for?
-
What is the malpighian tubes used for? Which animal uses it?
Excretion. Spiders
-
Difference between centipedes and millipedes?
pairs of legs per segment?
carnivore or herbivore?
poison?
lay eggs?
-
What is the cheliped? Which subphylum has this appendage?
first walking leg, has a claw. Crustacea
-
Excretion of nitrogenous wastes occur by _______ in _______ and ___________
- diffusion
- gills
- across thin areas of the cuticle
-
What is a vector of Lyme disease? Curable?
- Ticks (Chelicerata)
- Yes (antibiotics)
-
What is the oldest ancestral and most widely occuring larva in Crustaceans?
nauplius. (planktonic, move in shore to develop)
-
Circulatory system of crayfish: Small, angular ____ that lies in the _____ _____, and enclosed in ________. Blood leaves heart in arters but returns by ______. 3 pairs of ______, which are ___________.
- heart
- pericardial sinus
- pericardium
- sinuses
- ostia
- opening of the heart that receive hemolymph
-
Arthropod's exoskeleton vs cuticle of annelids.
Exoskeleton = contains ______, goes through ______
Cuticle = made of ______, doesn't ____
- chitin, ecdysis
- collagen, molt
-
Advantanges of joined appendages?
Efficiency and better locomotion
-
Function of antennules in crayfish? ______, _____, and ______
touch, taste, equilibrium
|
|