Post on 16-Apr-2017
Phylum: Arthropoda
Phylum: Arthropoda
Arthropods are the joint-legged animals. (arthro = jointed & poda = leg)
Characteristics…..
1. an external skeleton called an exoskeleton that supports & protects their body. Made of chitin.
Characteristics…..
1. an external skeleton called an exoskeleton that supports & protects their body. Made of chitin.
Characteristics…..
1. an external skeleton called an exoskeleton that supports & protects their body. Made of chitin.2. Jointed appendages (tentacles, setae, etc. were not jointed).
Characteristics…..
1. an external skeleton called an exoskeleton that supports & protects their body. Made of chitin.2. Jointed appendages (tentacles, setae, etc. were not jointed).
Characteristics…..
1. an external skeleton called an exoskeleton that supports & protects their body. Made of chitin.2. Jointed appendages (tentacles, setae, etc. were not jointed).3. Metameric (segmented) body plan, like their annelid
ancestors.
Characteristics…..
1. an external skeleton called an exoskeleton that supports & protects their body. Made of chitin.2. Jointed appendages (tentacles, setae, etc. were not jointed).3. Metameric body plan, like their annelid ancestors, the body is divided into distinct segments.
Characteristics…..
1. an external skeleton called an exoskeleton that supports & protects their body. Made of chitin.2. Jointed appendages (tentacles, setae, etc. were not jointed).3. Metameric body plan, like their annelid ancestors, the body is divided into distinct segments.4. Open circulatory system.
Characteristics…..
1. an external skeleton called an exoskeleton that supports & protects their body. Made of chitin.2. Jointed appendages (tentacles, setae, etc. were not jointed).3. Metameric body plan, like their annelid ancestors, the body is divided into distinct segments.4. Open circulatory system.5. Well developed, linear nervous system.
Scientists have described about 2 million species of organisms. About 1 million of them are arthropods.
Scientists have described about 2 million species of organisms. About 1 million of them are arthropods.
If success is measured by species diversity, arthropods are the most successful organisms!
Arthropods 50%
All plants, fungi,bacteria, and all other animals
Scientists have described about 2 million species of organisms. About 1 million of them are arthropods.
If success is measured by species diversity, arthropods are the most successful organisms!
Kingdom
Phylum
Class
Order
Family
Genus
Species
Kingdom
Phylum Subphylum (not quite different enough to Class be a class, but too similar to
be a phylum of its own) Order
Family
Genus
Species
extinct
extinct extant
Trilobites were marine arthropods. They are all extinct and we only know them as fossils.
Subphylum: Trilobitomorpha
The three extant subphyla of arthropods are classified based on the number of antennae they have.
The three extant subphyla of arthropods are classified based on the number of antennae they have.
Subphylum Chelicerata (zero)
The three extant subphyla of arthropods are classified based on the number of antennae they have.
Subphylum Chelicerata (zero)
Subphylum Crustacea (two)
The three extant subphyla of arthropods are classified based on the number of antennae they have.
Subphylum Chelicerata (zero)
Subphylum Uniramia (one)
Subphylum Crustacea (two)