Insects - Arthropoda Flashcards
T/F: Arthropods have exoskeletons unlike Annelids
True
What are 5 characteristics seen in both Arthropoda and Annelida? (Hint: EPSSCM)
- Eucoelomate
- Protostome
- Schizocoelous
- Spiral cleavage
- Metameric (segmented)
Arthropods are organized by using __________
Phylogeny
What are subphylum’s?
A taxonomic group ranking between a phylum and a class
What are the 4 subphylum’s in Arthropoda?
- Trilobita
- Crustacea
- Myriapoda
- Chelicerata
Trilobita means what?
3 lobe
T/F: Sea spiders are spiders
False
T/F: Daddy long leg spiders are not spiders
False
The trilobite belongs to which subphylum?
A. Hexapoda
B. Crustacea
C. Myriapoda
D. Chelicerata
E. Echinodermata
D. Chelicerata
What is a unique feature that the trilobite has?
Pincers
T/F: Spiders belong within the subphylum Chelicerata
True
T/F: Dust mites and ticks (specialized mites) do not fall under the subphylum of Chelicerata
False; they do!
Marine isopods, krill, sea shrimp, water fleas, crabs, shrimp and lobsters/crayfish all fall within which subphylum?
A. Hexapoda
B. Crustacea
C. Myriapoda
D. Chelicerata
E. Echinodermata
B. Crustacea
T/F: Not all centipedes are venomous
False; all centipedes are venomous
The subphylum Myriapod consists of _________ and __________
- Centipedes
- Millipedes
The subphylum Hexapoda consists of common __________
Insects
What is tagmosis?
The division of body into regions
T/F: Tagmosis is the same as metamerism
False!
FITB: Male spiders have specialized ______ ______ used for sperm transfer
Boxing gloves
T/F: Male spiders are usually larger than female spiders
False; males are smaller than females
Is segmentation (metamerism) present in Arthropoda?
Yes
T/F: Metamere segments in arthropods are more specialized than in annelids
True
Are septa present in Arthropods?
Yes
FITB: _______ allows for hard/sharp structures
Exoskeleton
FITB: Harder exoskeletons contain _______ ______
Calcium salts
TOT: Arthropods have a open/closed circulatory system
Open
What are the 3 main parts associated with Arthropoda open circulatory systems?
- Hemocoel (primary body cavity)
- Hemolymph (fluid that is similar to blood that is occupied within the Hemocoel)
- Dorsal heart
T/F: Arthropods have a closed circuit of vessels
False; remember that they have an open circulatory system
What are two muscles found within the exoskeleton that are paired together?
- Antagonistic muscle
- Striated muscle
FITB: Arthropoda have a dorsal ____ with a connected ________ nerve cord
- Brain
- Ventral
