arthrapoda

Question 1

Cuticular exoskeleton

Answer 1

A rigid external skeleton made of chitin and proteins that protects the body and provides attachment points for muscles.

Question 2

Chitin

Answer 2

A strong polysaccharide that forms the main structural component of the arthropod exoskeleton.

Question 3

Tagmata

Answer 3

Specialized body regions formed by fused segments, such as head, thorax, and abdomen.

Question 4

arthropoda

Answer 4

includes centipdes, spiders, crustaceans and insects

Question 5

chelicerata

Answer 5

includes spiers, ticks, scorpions and horseshoe crabs

Question 6

Myriapoda

Answer 6

includes millipedes, centipedes

Question 7

prosoma (cephalothorax)

Answer 7

tagmata in chelicerates containing 4 pairs of legs, 1 pair of pedipalps and chelicerae

Question 8

opisthosoma (abdomen)

Answer 8

posterior tagmata in chelicerates containing digestive and reproductive systems

Question 9

Antennae

Answer 9

Paired sensory appendages used for touch, smell, and environmental detection.

Question 10

oviger

Answer 10

Specialized appendages in male horseshoe crabs and sea spiders used to carry eggs.

Question 11

book gills

Answer 11

respiratory structures in horseshoe crabs consisting of stacked plate like tissues for gas exchange in water

Question 12

book lungs

Answer 12

Respiratory organs in spiders and some arachnids consisting of stacked internal membranes for gas exchange.

Question 13

trachae

Answer 13

A system of air-filled tubes that deliver oxygen directly to tissues, common in insects and some arachnids.

Question 14

spiracles

Answer 14

External openings that allow air to enter the tracheal system.

Question 15

mandible

Answer 15

A jaw-like mouthpart used for biting and chewing, found in many arthropods such as myriapoda, crustceans and hexapods

Question 16

Malpighian tubules

Answer 16

Excretory organs in many arthropods that remove nitrogenous waste from the surrounding hemolymph

Question 17

mandibulata

Answer 17

A major arthropod group that possesses mandibles (jaw-like mouthparts), including crustaceans, insects, and myriapods.

Question 18

epicuticle

Answer 18

The thin outermost layer of the arthropod exoskeleton, waterproof and protective.

Question 19

Procuticle

Answer 19

The thicker inner layer of the cuticle, containing chitin and proteins and providing strength. exocutile is secreted before moult. endocuticle secreted after moult

Question 20

apodeme

Answer 20

ingrowths for muscle attachment - used for snapping of biramous claw

Question 21

biramous

Answer 21

appendage branches at the end e.g. crustaceans

Question 22

uniramous

Answer 22

appendages do not split at end e.g. hexapods, myriapods, chelicerae

Question 23

carapace

Answer 23

dorsal protective cuticle which alos covers other segments

Question 24

chelae

Answer 24

pincer like claws used for grasping food, defence or fighting

Question 25

maxilliped

Answer 25

modified thoracid appendage to help bring food towards the mouth

Question 26

maxillae

Answer 26

head derived mouthparts for tasting, holding and manipulating food

Question 27

swimmerets

Answer 27

small abdominal appendages in crustaceans for swimming and sometimes acrrying eggs

Question 28

antennal gland

Answer 28

used for excretion instead of malphigian tubules in crustacea

Question 29

Ommatidia

Answer 29

compound eyes

Question 30

nauplius larvae

Answer 30

first larval stage of many crustaceans

Question 31

class malacostraca

Answer 31

soft shelled crustacea e.g. shrimp, crabs, lobster, krill

Question 32

class arachnida

Answer 32

spiders, scorpions, mites and ticks

Question 33

scleroprotein

Answer 33

what is produced by the silk glands

Question 34

class diplopoda

Answer 34

what class are millipedes

Question 35

class chilopoda

Answer 35

what class are centipedes

Question 36

epicuticle, exocuticle, endocuticle, epidermis

Answer 36

what are the 4 layers of the exoskeleton shell in crustacea