-
Postoral segments 1,2,3,4,5,6 and 7 of the insectan ancestor gave rise to what structure in modern insects?
- 1. Lost in the head
- 2. Mouthpart (mandible)
- 3. Mouthpart (maxilla)
- 4. Mouthpart (labium)
- 5,6 & 7. 1st, 2nd & 3rd pair of legs.
-
Characteristics of
Chelicerata
- Subphylum of Arthropoda w following characteristics:
- 1. 1st pair of appendages pincer like structures (chelicerae)
- 2. Body divided into cephalothorax & abdomen
- 3. Lack antennae
-
Characteristics of
Mandibulata
- Subphylum of Arthropoda
- 1. One pair of mouthparts dev into mandibles
- 2. Two pair of mouthparts dev as maxillae
- (maxilla & labium)
- 3. One or 2 pairs of antennae
-
External Characteristics of Arthropods
- 1. Bilateral symmetry
- 2. Segmented Body
- 3. Pair of appendages on each body segment
- 4. Segmented appendages posterior to mouth formed
- into mouthparts
- 5. Body covered by exoskeleton
-
Internal Characteristics of
Arthropods
- 1. Dorsal heart
- 2. Ventral nervous system
- 3. Stomodaeum (foregut), proctodaeum (hindgut),
- respiratory tract, and ducts lined with cuticle (exoskeleton)
-
Common Names and Characteristics
of Crustacea
Lobsters, shrimps, sowbugs, pillbugs, crabs...
- Body divided into cephalothorax & abdomen,
- 1 to 2 pair antennae, 5-7 pairs of legs,
- mostly aquatic
-
Common Name and Characteristics
of Insecta
Insects
- Body divided into head, thorax & abdomen
- 3 pairs of legs, some w 1-2 pairs of wings
- 1 pair of antennae
-
Common Names and Characteristics
of Arachnida
Ticks, mites, spiders, scorpions...
- Body divided into cephalothorax & abdomen
- 4 pairs of legs
- no antennae
- eyes simple
-
Common Name and Characteristis of Diplopoda
Millipede
- Body divided into head and trunk
- 2 pairs of legs per body segment
- 1 pair antennae
- plant feeders (phytophagous)
-
List the Arachnid Orders
- Araneae = spiders
- Acari = ticks and mites
- Scorpiones = scorpions
- Opiliones = daddy longlegs
-
Common name and Charac of
Chilopoda
Centipede
- Body divided into head and trunk
- 1 pair legs per body segment
- 1 pair antennae
- 1st pair of legs modified into poisonous jaws carnivorous
-
Hierarchical Classifications
Kingdom, Phylum, Class, Order, Family, Genus, Species
-
5 Arthropod Classes
- Chilopoda
- Diplopoda
- Insecta (Hexapoda)
- Crustacea
- Arachnida
|
|
