Textbook Question
Use your understanding of insect evolution to predict two adaptations for terrestrial living that occurred in spiders.
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Ch. 31 - Protostome Animals
Freeman8th EditionBiological ScienceISBN: 9780138276263
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Table of contents
- Ch. 1 - Biology: The Study of Life13
- Ch. 2 - Water and Carbon: The Chemical Basis of Life14
- Ch.3 - Protein Structure and Function10
- Ch.4 - Nucleic Acids and the RNA World10
- Ch. 5 - An Introduction to Carbohydrates10
- Ch. 6 - Lipids, Membranes, and the First Cells11
- Ch. 7 - Inside the Cell10
- Ch. 8 - Energy and Enzymes: An Introduction to Metabolism10
- Ch. 9 - Cellular Respiration and Fermentation11
- Ch. 10 - Photosynthesis12
- Ch. 11 - Cell-Cell Interactions12
- Ch. 12 - The Cell Cycle8
- Ch. 13 - Meiosis12
- Ch. 14 - Mendel and the Gene23
- Ch. 15 - DNA and the Gene: Synthesis and Repair15
- Ch. 16 - How Genes Work16
- Ch. 17 - Transcription, RNA Processing, and Translation16
- Ch. 18 - Control of Gene Expression in Bacteria16
- Ch. 19 - Control of Gene Expression in Eukaryotes12
- Ch. 20 - The Molecular Revolution: Biotechnology, Genomics, and New Frontiers15
- Ch. 21 - Genes, Development, and Evolution12
- Ch. 22 - Evolution by Natural Selection16
- Ch. 23 - Evolutionary Processes13
- Ch. 24 - Speciation15
- Ch. 25 - Phylogenies and the History of Life13
- Ch. 26 - Bacteria and Archaea15
- Ch. 27 - Diversification of Eukaryotes16
- Ch. 28 - Green Algae and Land Plants16
- Ch. 29 - Fungi18
- Ch. 30 - An Introduction to Animals9
- Ch. 31 - Protostome Animals15
- Ch. 32 - Deuterostome Animals17
- Ch. 33 - Viruses16
- Ch. 34 - Plant Form and Function16
- Ch. 35 - Water and Sugar Transport in Plants16
- Ch. 36 - Plant Nutrition13
- Ch. 37 - Plant Sensory Systems, Signals, and Responses16
- Ch. 38 - Flowering Plant Reproduction and Development16
- Ch. 39 - Animal Form and Function17
- Ch. 40 - Water and Electrolyte Balance in Animals16
- Ch. 41 - Animal Nutrition16
- Ch. 42 - Gas Exchange and Circulation16
- Ch. 43 - Animal Nervous Systems16
- Ch. 44 - Animal Sensory Systems16
- Ch. 45 - Animal Movement11
- Ch. 46 - Chemical Signals in Animals16
- Ch. 47 - Animal Reproduction and Development16
- Ch. 48 - The Immune System in Animals16
- Ch. 49 - An Introduction to Ecology15
- Ch. 50 - Behavioral Ecology16
- Ch. 51 - Population Ecology16
- Ch. 52 - Community Ecology20
- Ch. 53 - Ecosystems and Global Ecology17
- Ch. 54 - Biodiversity and Conservation Ecology18
Chapter 31, Problem 3
One trait that is shared by humans and protostomes is __________.
Verified step by step guidance1
Identify the common characteristics between humans and protostomes. Protostomes are a group of animals that includes organisms such as insects, worms, and mollusks.
Consider the basic biological traits that are essential for life, such as cellular structure, genetic material, and methods of reproduction.
Focus on the developmental processes. Recall that protostomes develop through a process called 'protostomy', where the mouth develops before the anus during embryonic development.
Analyze whether humans share this developmental trait with protostomes or if they follow a different pattern known as 'deuterostomy', where the anus develops before the mouth.
Conclude by identifying a shared trait that is not related to the specific embryonic development but is fundamental to both groups, such as multicellularity, presence of DNA, or aerobic respiration.
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Protostomes
Protostomes are a major group of animals characterized by their embryonic development, where the mouth forms before the anus. This group includes diverse organisms such as mollusks, annelids, and arthropods. Understanding protostomes is essential for comparing their traits with those of humans, who are part of the deuterostome group.
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Guided course
06:59
Overview of Animals - 2
Shared Traits
Shared traits refer to characteristics that are common between different species or groups. In the context of humans and protostomes, these traits can include fundamental biological features such as bilateral symmetry, a nervous system, or certain developmental processes. Identifying these shared traits helps in understanding evolutionary relationships.
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05:42Shared Derived Characters
Evolutionary Biology
Evolutionary biology is the study of the processes that have led to the diversity of life on Earth. It examines how species evolve over time through mechanisms like natural selection and genetic drift. This concept is crucial for understanding why certain traits are shared between humans and protostomes, as it provides insight into their common ancestry.
Recommended video:
02:45History of Evolutionary Theory Example 1
Related Practice
Textbook Question
Which protostome phyla successfully made the transition from water to land? Select True or False for each phylum.
T/FMollusca
T/FArthropoda
T/FAnnelida
T/FNematoda
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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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