Week 7: Lecture 9: Arthropods 2: Chelicerata

Question 1

Chelicera

Answer 1

claws/jaws/fangs

Question 2

What is chelicerata?

Answer 2

a subphylum of the phylum arthropoda

Question 3

Groups inc. in chelicerata

6

Answer 3

1. horseshoe crabs
2. scorpians
3. spiders
4. harvestmen
5. mites
6. ticks

Question 4

Gas exchange in chelicerata

Answer 4

book lungs or trachea

Question 5

How do book lungs work?

2

Answer 5

1. air flows through a spiracle opening
2. air flows between lamallae and blood (hemolymph) flows and extracts oxygen from it and transfers it to the rest of the body

Question 6

Reproduction of chelicerata

Answer 6

sexual reproduction, separate sexes, usually indirect sperm transfer with a spermatophore

Question 7

Parental care

Answer 7

sophisticated

Question 8

Two classes of chelicerata

Answer 8

merostomata and arachnida

Question 9

Class merostomata

Answer 9

horseshoe crabs

Question 10

Antenna

Answer 10

appendage which comes from the top of the head

Question 11

Pedipalp

Answer 11

jointed sensorial appendages which aren’t legs

Question 12

Chelicerae

Answer 12

fangs

Question 13

Class arachnida

Answer 13

body with waist separating the cephalothorax from the abdomen

Question 14

Five orders within the class archanida

Answer 14

Opiliones
Acari
Scorpiones
Solifugae
Pseudoscorpiones

Question 15

Order Opiliones (within the class arachnida within the subphylum chelicerata within the phylum arthropoda)

Answer 15

harvestment

Question 16

Order acari (within the class arachnida within the subphylum chelicerata within the phylum arthropoda)

Answer 16

ticks and mites

Question 17

Ticks

Answer 17

within the order acari,

they are ectoparasites

Question 18

Mites

Answer 18

within the order acari,

they are herbivores and predators

Question 19

Order Acari
(within the class arachnida within the subphylum chelicerata within the phylum arthropoda)
features
2

Answer 19

1. body without waist and not visibly segmented

2. short legs

Question 20

Order Opiliones
(within the class arachnida within the subphylum chelicerata within the phylum arthropoda)
features

Answer 20

1. body without waist but visibily segmented
2. long legs
3. ocular tuberole

Question 21

Ocular tuberole

Answer 21

lump w. eyes where should be

Question 22

Order scorpioness

Answer 22

scorpians

Question 23

Order Solifugae

Answer 23

sun spiders,

avoid light

Question 24

Order pseusoscorpiones

Answer 24

pseudoscorpions