Wize High School Grade 11 Biology Textbook > Invertebrates: Part 2 - Molting [Under construction]
Arthropoda (Jointed Limbs)
0:00 / 0:00
Characteristics of Arthropoda
- Cephalization: well developed head
- Nervous tissue is concentrated towards the head
- Head is specialized for feeding and sensing
- Open circulatory system
- Jointed appendages
- Arthro-pod = "Jointed"-"foot"
- Specialized function
- Walking
- Feeding
- Sensing
- Reproduction
- Defense Example: scorpions tail
- Appendages are added to the main body
- Segmented body
- developed through Hox genes
- Sclerotized cuticle
- Made of chitin (very strong)
- Creates exoskeleton
- Molting needed to grow
- Provides support for muscles to contract against
- Structure enables life on land (fight gravity)
- Tagmatization: grouping of segments for a specialized prupose
- Segmented body and jointed appendages perform specialized functions
- Allows for division of labor
- Increased arthropod diversity (adaptive radiation)
- Cephalothorax: head and thorax are merged
Practice: Overview of Arthropoda
Which of the following features of Arthropoda are true? (select all that apply)
Practice: Overview of Arthropoda
Which of the following is NOT true about tagmatization?
Mark Yourself Question
- Grab a piece of paper and try this problem yourself.
- When you're done, check the "I have answered this question" box below.
- View the solution and report whether you got it right or wrong.