arthropoda

Question 1

What characteristics of arthropods ensured their survival and success?

Answer 1

stronger support systems, smaller body size, body systems that conserve water, ability to fly

Question 2

What are some of the distinguishing characteristics of all arthropods?

Answer 2

segmented bodies, jointed appendages, and molting of cuticle (edysis, ecdysozoa)

Question 3

How many tissue layers do arthropods possess, and what is the name of their body cavity?

Answer 3

they are triploblastic and their body cavity is the hemocoel

Question 4

What type of circulatory system is found in arthropods?

Answer 4

open circulatory system

Question 5

What is the nervous system like in arthropods?

Answer 5

dorsal brain with ventral nerve cord

Question 6

What type of respiratory system is found in arthropods?

Answer 6

there are several different types of respiratory structures found within arthropods, including the book lungs (chelicerates such as spiders and horseshoe crabs) gills (crustaceans), or malpighian tubules (insecta)

Question 7

What are the 4 main sub-phylums of arthropoda?

Answer 7

chelicerata, myriapoda, hexapoda, crustacea

Question 8

What classes are found in chelicerata?

Answer 8

Merostomata (horseshoe crabs), Arachnida (spiders, scorpions, ticks)

Question 9

What classes are found in sub-phylum myriapoda?

Answer 9

chilopoda (centipedes) and diplopoda (millipedes)

Question 10

What class is found in sub-phylum crustacea?

Answer 10

malacostraca

Question 11

What class is found in sub-phylum hexapoda?

Answer 11

insecta

Question 12

What is tagmosis, a characteristic common to all members of arthropoda?

Answer 12

process by which segments in the animal body fused to form units called tagmata (ex: cephalothorax)

Question 13

What is serial homology, a characteristic common to all members of arthropoda?

Answer 13

appendages are developed similarly but exhibit different functions

Question 14

What type of digestive system is found in arthropods?

Answer 14

complete

Question 15

What is the difference between chelicerae and pedipalps in chelicerates?

Answer 15

chelicerae are the first pair of appendages (typically claws or fangs) while pedipalps are the second, usually larger and more like the legs

Question 16

What are some characteristics of hexapoda (class insecta)?

Answer 16

six legs (one pair on each segment of the thorax), one pair of antennae, uniramous (unbranched) appendages, typically 2 pairs of wings, and 9-11 segments in the abdomen

Question 17

What is the function of the malpighian tubules found in insecta?

Answer 17

waste excretion but also retains water

Question 18

What are the main feeding mouthparts found in class insecta?

Answer 18

siphoning, lapping, biting/chewing, sponging, piercing/sucking

Question 19

What type of mouthparts are found in butterflies?

Answer 19

siphoning

Question 20

What type of mouthparts are found in bees?

Answer 20

lapping

Question 21

What type of mouthparts are found in grasshoppers, cockroaches, termites, etc?

Answer 21

biting/chewing

Question 22

What type of mouthparts are found in house flies?

Answer 22

sponging

Question 23

What type of mouthparts are found in mosquitoes?

Answer 23

piercing/sucking

Question 24

What are some distinguishing characteristics of sub-phylum crustacea, class malacostraca?

Answer 24

biramous (branched) appendages, 2 pairs of antennae

Question 25

How can you tell the difference between diplopoda and chilopoda?

Answer 25

diplopoda possess a cylindrical body with 2 pairs of legs per segment, with the legs located under the body. chilopods possess a flattened body with 1 pair of legs per segment, located on the side of the body. diplopoda are herbivores, chilopoda are carnivorous

Question 26

What is the extinct group of arthropods called?

Answer 26

trilobites

Question 27

What is the function of spiracles in grasshoppers?

Answer 27

openings that connect to tracheal tubules for gas exchange and water loss prevention

Question 28

what is the function of the tympanum?

Answer 28

hearing

Question 29

How can you tell the difference between male and female grasshoppers?

Answer 29

female grasshoppers possess an ovipositor, which is used for burrowing into the soil to deposit eggs

Question 30

What is the function of the chelipeds found in crustaceans?

Answer 30

prey capture and defense

Question 31

What is the function of antennae found in crustaceans?

Answer 31

sensory organs for touch and taste. antennae are the longer pair, antennules are the shorter pair

Question 32

What is the function of mandibles?

Answer 32

chewing food

Question 33

How can you tell the difference between male and female crayfish?

Answer 33

males are typically larger in size and possess copulatory swimmerets. females possess a seminal receptacle

Question 34

What is the function of the gastric mill?

Answer 34

grind food in the stomach (teeth like)

Question 35

What is the function of the digestive glands?

Answer 35

enzymes for chemical breakdown of food

Question 36

What is the function of the green glands?

Answer 36

primitive kidneys for excretion

Question 37

What is the fusion of the head and thorax called?

Answer 37

cephalothorax

Question 38

What is the tail like appendage in horseshoe crabs called?

Answer 38

telson

Question 39

What is the function of the gastric caeca in grasshoppers?

Answer 39

enzymes for digestion

Question 40

What is the function of the proventriculus in grasshoppers?

Answer 40

grinding food

Question 41

what is the function of the ventriculus in grasshoppers?

Answer 41

enzymatic digestion

Question 42

What is the larval form exclusive to crustaceans called?

Answer 42

nauplius

Question 43

How can you tell the difference between a male and female horse shoe crab?

Answer 43

male horse shoe crabs possess boxing glove shaped pedipalps