Transcript Largest phylum on earth Examples: spiders, ticks

Phylum Arthropoda
______________________on earth
Examples: ____________________________,
lobsters, insects
____________________species are unidentified
Characteristics of Arthropods
1. ______________________________
2. Specialized body segments called
_________________________
3. Specialized respiratory structure
4. Advanced sensory system
Insect Shedding Exoskeleton 
Exoskeleton
•Epidermis secretes ___________________________
•Provides protection
•Prevents _____________________________
3 Layers to Exoskeleton
•Outer _________________
•Middle _______________
•Flexible _________________
Cicada Exoskeleton 
Exoskeleton Terms
Molting  _____________________during growth
Metamorphosis  changing ___________________
development
Complete: egg larva  pupa  adult
Incomplete: egg nymph  adult
Segments of Insect
1. Head
2. Thorax
3. Abdomen
Specialized Appendages
Pincers  _____________________________
Mouthparts  ___________________
Antennae  ______________________________
Scorpion Pincer
Pincers of a Fire Ant
Respiratory System
Very efficient gas exchange
Trachea  _______________to take in Oxygen
Book Lungs -> ___________for gas exchange
Gills  aquatic _______________________
Digestion
Feeding _________________________________
Grasshopper Eating a Leaf
Praying Mantis Eating a Cricket
Response
Brain & Nerve Chords  coordinate movement and
senses
Compound Eyes ___________________detectors,
each with its own lens
Excretion
Terrestrial  ________________________ sacs
which remove water waste & add to feces
Aquatic  diffusion
Malphigian Tubule of a
Cockroach
Circulation
All have _______________________
Very Few or No Blood Vessels
Reproduction
Separate Sexes
Terrestrial  __________Fertilization
Aquatic  ____________Fertilization
Classes of Arthropods
Crustacea
________________________________
_____ body segments (thorax & abdomen)
_______ pairs of legs
Classes of Arthropods
Arachnida
_________________________________
______ body segments (thorax & abdomen)
______pairs of legs
____________________________________
Classes of Arthropods
Insecta
______________________________
_____segments (head, thorax, abdomen)
_________ pairs of legs
social behaviors
Dung Beetle
Leopard Moth
Classes of Arthropods
Chilopoda
___________________
Many body segments
1 pair of legs per segment
_______________________
Silverfish- Not a Centipede!
I won’t bite you!
Centipede
I can bite you!
Classes of Arthropods
Diplopoda
_________________
Many body segments
__ pairs of legs per segment
_______________________
I’m a Millipede!
Phylum Amphibia
-Vertebrates that live on land and in water
-_______ million years ago amphibians came out of
water
-Breathed Oxygen from air when water was stagnant
-Includes ______________________________
Golden Bell Frog
Red-Backed Salamander
I live near you!
Characteristics of Amphibians
-_____________________to support weight
-Developed respiratory system with __________
-Moist skin that absorbs additional oxygen
__________________________
-Advanced nervous system with ________________
Hello!
Organs of the Frog
-Skin- For respiration
-Nares- Take in Oxygen
-Tongue  Used for catching prey
-Liver- Detoxifies Harmful substances
-Stomach-Mixes food with gastric juices; sends food to SI
-Gall Bladder- Stores Bile
-Pancreas-Secretes enzymes and hormones for digestion
-Small Intestine – Absorbs nutrients and sends undigested food to LI
-Fat Bodies-Fat source for frog during hibernation
-Kidney –Produces and excretes Urine
-Spleen—Stores and purifies blood
-Heart- pumps blood throughout the body
-Lungs- Takes in Oxygen and distributes to blood
-Testes- Male sex organs
-Ovaries- Female sex organs