L10: Phylum Arthropoda pt 2

Question 1

What are the subphyla under Arthropods?

Answer 1

• Trilobitomorpha
• Chelicerata
• Myriopoda
• Hexapoda
• Crustaceans?

Question 2

Describe subphylum Trilobitomorpha

Answer 2

Dominant during Cambrain period - now extinct
Flattened body
Three tagmata

Question 3

What classes are under subphylum Chelicerata?

Answer 3

Class Merostomata
Class Arachnida

Question 4

What animals make up the subphylum Chelicerata?

Answer 4

Spiders, mites, ticks, horseshoe crabs

Question 5

In the subphylum Chelicerata..

What are chelicerae

Answer 5

One of the two pairs of anterior appendages of arachnids. May be pincerlike or modified for piercing and sucking or other functions

Question 6

In the subphylum Chelicerata..

What are pedipalps

Answer 6

The second pair of appendages of chelicerate arthropods. These
appendages are sensory in function.

Question 7

Chelicerata are divided into two tagmata called:

Answer 7

prosoma and opisthosoma

Question 8

Describe the prosoma

Answer 8

A sensory, feeding, and
locomotor tagma of chelicerate arthropods

Question 9

Describe the opisthosoma

Answer 9

The portion
of the body of a chelicerate arthropod that
contains digestive, reproductive, excretory,
and respiratory organs.

Question 10

In the subphylum Chelicerata..

T/F Long antennae

Answer 10

False - no antennae

Question 11

The class Arachnida consists of what animals?

Answer 11

Spiders, mites, ticks, scorpions

Question 12

In the class Arachnida…

Excretion occurs via what structure?

Answer 12

the coxal glands or Malpighian tubules

Question 13

In the class Arachnida..

Describe reproduction

monoecious/larvae,etc

Answer 13

Dioecious, direct development, courtship rituals

Question 14

What animals are in the subphylum Myriopoda?

Answer 14

Millipedes and Centipedes

Question 15

Compare and contrast body/appendages between millipedes and centipedes

Answer 15

Millipedes- rounded body, two pairs of appendages per body segment
Centipedes - depressed body, one pair of appendages per body segment

Question 16

In the subphylum Crustaceans..

T/F: not a valid taxonomic group

Answer 16

True - paraphyletic

Question 17

What are the three classes under Crustaceans

Answer 17

• Malacostraca
• Copepoda
• Branchiopoda

Question 18

What animals are under the class Malacostraca?

Answer 18

Shrimps, lobsters, crabs, amphipods

Question 19

What are the two body regions in class Malacostaca?

Answer 19

Cephalothorax
Abdomen

Question 20

Pertaining to class Malacostaca..

What is the functon of the cephalothorax

Answer 20

Sensory and feeding, as well as locomotion

Question 21

Pertaining to class Malacostaca..

What is the function of the abdomen

Answer 21

Visceral and locomotor function

Visceral function is the physiological operation of the internal organs, or viscera, encompassing respiratory, circulatory, digestive and reproductive systems.

Question 22

Pertaining to class Malacostaca..

Identify the 7 different appendages

Answer 22

• Antennae
• Mandibles
• Maxillae
• Maxillipeds
• Pereopods
• Pleopods
• Uropods

Question 23

Describe the body shape of class Copepoda

Answer 23

Cylindrical body, median ocellus

Ocellus = simple eye/eyespot

Question 24

The first antennae in copepodes are used for what?

Answer 24

Swimming

Question 25

Class Brachiopoda are made up of what animals?

Answer 25

Fairy shrimp, brine shrimp, waterfleas

Question 26

Branchiopoda have ____ respiraatory appendages

Answer 26

Leaflike

Question 27

Subphylum Hexapoda have three tagmata, which are:

Answer 27

Head, thorax, abdomen

Question 28

Hexapoda have ____ pairs of appendages on their head, ____ pairs of legs on their thorax, and ____ or ____ two pairs of wings

Answer 28

5;3;1;2

Question 29

Identify the 4 insect mouthpart variations

Answer 29

Chewing Piecing-sucking Siphoning Sponging