Arthropoda

Question 0

What are the 3 sub groups of the myriapoda?

Answer 0

Diplopoda
Chilopoda
Symphyla

Question 1

What are the 7 characteristics of arthropods?

Answer 1

Segmented animals
Paired, jointed appendages
Armor like exoskeleton
Open circulatory system
Dorsal heart that pumps haemolymph
Aquatic forms have gills
Terrestrial forms have trachae or book lungs

Question 2

What’s exaptation?

Answer 2

Acquisition of new functions by existing structures

Question 3

What are the classes of chelicerates?

Answer 3

Merostomes
Arachnids
Xiohosura

Question 4

What are the 4 characteristics of the chelicerates?

Answer 4

Body consists of a cephalothorax, abdomen and 6 pairs of jointed appendages
First pair of appendages are chelicerae
Second pair of pedipalps
No antennae

Question 5

What does uniramous mean?

Answer 5

Appendages consisting of a single branch, undivided.

Question 6

What does biramous mean?

Answer 6

Jointed appendages consisting of two branches

Question 7

What are the 4 characteristics of mandibulates?

Answer 7

Mandibles
One/two pairs of antennae
Various body arrangements
Variable leg numbers

Question 8

What are the sub-groups of the mandibulates?

Answer 8

Crustacea
Myriapoda
Hexapoda

Question 9

What are the 6 key features of crustacea?

Answer 9

Cephalothorax
Abdomen
5 pairs of walking legs
2 pairs of antennae
Mandibles
Maxillae

Question 10

What is tagmosis?

Answer 10

The joining up of somites into tagreats

Question 11

What are the orders of arachnids?

Answer 11

Scorpionada
Pseudoscorpions
Phalangia
Accri