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Ch. 31 - Protostome Animals
Chapter 30, Problem 7

Pose a hypothesis to explain why the evolution of the wing was such an important event in the evolution of insects.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Evolutionary Adaptation

Evolutionary adaptation refers to the process by which species develop traits that enhance their survival and reproduction in specific environments. The evolution of wings in insects is a prime example, as it allowed for improved mobility, access to new habitats, and evasion from predators, significantly impacting their ecological success.
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Flight Mechanics

Flight mechanics involves the principles governing how organisms achieve and maintain flight. Insects utilize various wing structures and flapping techniques to generate lift and thrust, which not only facilitates movement but also enables behaviors such as foraging and mating, contributing to their evolutionary fitness.
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Ecological Diversification

Ecological diversification is the process by which species exploit different ecological niches, leading to increased biodiversity. The development of wings in insects opened up numerous ecological opportunities, allowing them to colonize diverse environments, adapt to various food sources, and evolve into a wide range of forms and functions.
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Related Practice
Textbook Question

Which of these characteristics does not apply to cnidarians? a. are diploblastic b. possess a gastrovascular cavity with one opening c. undergo metamorphosis d. have a central nervous system

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Textbook Question

Propose an explanation for why annelids and arthropods were thought to be closely related, before phylogenetic analyses in the late 1990s.

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Textbook Question

Use your understanding of insect evolution to predict two adaptations for terrestrial living that occurred in spiders.

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Textbook Question

Which of these choices is an example of homology (similarity due to common ancestry)? a. suspension feeding in sponges and clams b. ectoparasite lifestyle in aphids and ticks c. cnidocytes (stinging cells) in jellyfish and sea anemones d. radial symmetry in cnidarians and echinoderms

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Textbook Question

Suppose that a gene originally identified in nematodes (roundworms) is found to be homologous with a gene that can cause developmental abnormalities in humans. Would it be possible to use fruit flies as a model organism to study this gene? Explain.

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Open Question

The pygmy zebra octopus is a potential new model organism for understanding brain function in humans despite the independent evolution of high intelligence in both groups. Describe (or draw a phylogenetic tree to show) the relationships among humans (H. sapiens), the pygmy zebra octopus (O. chierchiae) and two other protostome model organisms in medicine: the fruitfly (D. melanogaster) and roundworm (C. elegans).

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