By the end of this lesson you will be able to:
- Define exoskeleton.
- Contrast advantages and disadvantages of an exoskeleton.
- Describe the processes of circulation, respiration, and excretion in the
grasshopper.
- Describe and open circulatory system.
- Distinguish between complete and incomplete metamorphosis.
- List examples of non-insect arthropods.
Arthropods
Look at the attached pie graph. Which invertebrate phylum includes the most animals?
What is the defining characteristic of arthropods?
Exoskeleton –
What are the three common sections to an insects body?
Compound eyes –
Based on what you read and the picture of the cricket try to label the parts of the
grasshopper and the ant.
Read Facets of Zoology: Armor of Knights and Arthropods.
Create a T-chart to contrast the advantages and disadvantages of an exoskeleton.
Advantages
Blood –
Heart –
Artery –
Open circulatory system –
Tracheae –
Spiracles –
Excretory tubes –
Disadvantages
Describe circulation in a grasshopper.
Describe respiration in a grasshopper.
Describe excretion in a grasshopper.
Label the parts of the circulatory, excretory, and respiratory systems on the
grasshopper.
Molt –
Incomplete metamorphosis –
Metamorphosis –
Nymphs –
Complete metamorphosis –
Larva –
Pupa –
Label the stages of the metamorphosis on the two attached pictures and label if it is
complete or incomplete. Describe how you know.
List some arthropods that are not insects:
Read Facets of Zoology: The Society of the Bee
Describe the structure of an insect society.