Concept explainers
a.
To explain: The way in which the exoskeletons of arthropods help them to colonize land.
Introduction: Exoskeleton is a hard layer of protective material around the outer epithelial covering of some animals. It may exist as a shell in some animals, such as crabs and crustaceans. Exoskeletons are made up of chitin or calcium carbonates, which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.
b.
To list: The functions that the jointed appendages of arthropods have become modified to perform.
Introduction: Arthropods are
c.
To determine: The types of sensory organs that have evolved in arthropods.
Introduction: Arthropods are considered as the most biologically successful animal group. The arthropods are a more diverse group of animals and cover a greater range of habitats than any other animal group members.
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Study Guide for Campbell Biology
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- Arthropods usually have a distinct head. How would you define a “head”? What are the advantages and disadvantages of having such a body region?arrow_forwardWhat is one trait related to locomotion that Au. sediba shares with modern humans? A. Angled femurs B. Longer arms and shorter legs C. Long and thin pelvis D. A divergent big toe (big toe sticks out)arrow_forwardHow does segmentation enhance annelid locomotion? a. Segmentation creates repeating body structures so the entire organism functions in synchrony. b. Segmentation allows specialization of different body regions. c. Neural segmentation allows annelids to localize sensations. d. Muscle contractions can be localized to specific regions of the body to coordinate movement.arrow_forward
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