Lec 5 - Arthropods Flashcards
1
Q
Arthropods are…
A
single largest group of animals
-eg. crustaceans, insects
2
Q
Properties of arthropods:
A
- segmented body
- jointed limbs
- hard exoskeleton
3
Q
Sub -groups
A
- sea spiders
- spiders, scorpions, mites
- millipedes and centipedes
- crustacea
- insects
4
Q
Arthropod limbs
A
- uniramous
- biramous
- polyramous
5
Q
monophyletic
A
a group of organisms descended from a common evolutionary ancestor, or ancestral group
-especially one not shared with any other group.
6
Q
paraphyletic
A
a group of organisms descended from a common ancestor or ancestral group, but not including all the descendant groups.
7
Q
why so many insects
A
- feed on a larger variety of things
- terrestrial
8
Q
Pancrustacea
A
-molecular evidence groups insects and crustaceans together
9
Q
Ant farmers
A
- Sequester their crops away from external environment
- Extensive monitoring to remove disease
- Keep some variation in the crop (although mainly monoculture)
- Have bacteria and fungal symbionts to produce antibiotics
10
Q
uniramous
A
hard exoskeleton
11
Q
biramous
A
segmented body
12
Q
polyramous
A
jointed limbs
