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Questions and Answers
Which of the following traits is NOT used by animals to detect, capture, and eat other organisms?
What is a defining characteristic of animals' cell structure?
How do animals obtain their food?
What is the main function of nervous tissue in animals?
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What characteristic defines animals as heterotrophs?
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What is the main function of muscle tissue in animals?
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What is the name given to the rapid cell division that occurs after a sperm fertilizes an egg?
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Which stage is sexually immature and morphologically distinct from the adult in most animals?
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What do most animals have that regulates the development of body form?
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What group of protists is considered to be the closest living relatives to animals?
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What is the name given to the process that requires the evolution of new ways for cells to adhere and signal to each other?
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Which era dates back to about 1 billion to 542 million years ago?
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What is the name given to the hollow multicellular structure formed during cleavage?
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Which gene family regulates the development of body form in most animals?
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What process eventually leads a larva to become a juvenile?
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What is the name given to the group of protists that resemble modern choanoflagellates?
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Study Notes
Animal Characteristics
- Animals use various traits to detect, capture, and eat other organisms, but do not use photosynthesis.
- A defining characteristic of animals' cell structure is the absence of cell walls.
Nutrition
- Animals obtain their food by consuming other organisms or organic matter.
Heterotrophy
- Animals are heterotrophs, characterized by their inability to produce their own food.
Tissue Functions
- The main function of nervous tissue is to transmit and process information.
- The main function of muscle tissue is to contract and move the body.
Development
- The rapid cell division that occurs after a sperm fertilizes an egg is called embryogenesis.
- In most animals, the larval stage is sexually immature and morphologically distinct from the adult.
- Most animals have a gene regulatory network that regulates the development of body form.
- The process of metamorphosis eventually leads a larva to become a juvenile.
Evolutionary Relationships
- Choanoflagellates are a group of protists that are considered to be the closest living relatives to animals.
- The process of animal evolution required the development of new ways for cells to adhere and signal to each other, called gastrulation.
Protist Groups
- The group of protists that resemble modern choanoflagellates is called animal-like protists.
Geological Time Scale
- The Neoproterozoic era dates back to about 1 billion to 542 million years ago.
Embryonic Development
- The hollow multicellular structure formed during cleavage is called a blastula.
- The Hox gene family regulates the development of body form in most animals.
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Description
Test your knowledge on the overview of animal diversity from the Campbell Biology Tenth Edition. Explore the traits and behaviors of animals that allow them to detect, capture, and consume other organisms. This quiz is based on the lecture presentation by Nicole Tunbridge and Kathleen Fitzpatrick.
