Ancient Lampreys: Evolution and Predatory Behavior

What is the main focus of the Nature Communications paper?

• The discovery of two fossil lampreys from the Jurassic period

• The feeding habits of modern lampreys

• The evolution of dinosaurs

• The life cycle of hagfish

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What is unique about lampreys' life cycle?

• They start life as blind, toothless larvae

• They have a sucker-like mouth with rings of sharp teeth

• They are the only known vertebrate with a metamorphic lifecycle

• They feed on microscopic algae and detritus

What did the fossil lampreys from the Jurassic period consume?

• Microscopic algae and detritus

• Blood from their prey

• The flesh of their prey

• Organisms off the hard body surface of other aquatic animals

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What is the significance of the large body size of the fossil lampreys?

• It confirms earlier hypotheses about the evolution of larger body size

• It indicates a greater diversity in ancient lampreys than previously thought

• It suggests a correlation between body size and metamorphic lifecycle

• It supports the theory of lampreys being fearsome predators

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What might have driven the shift in lampreys' diet and size during the Jurassic period?

• The emergence of abundant thinly scaled prey

• The scarcity of food sources

• The need to adapt to changing environmental conditions

• The influence of other predatory species

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What does the discovery of the fossil lampreys suggest about their evolutionary history?

• Lampreys have remained unchanged over time

• Lampreys have gradually evolved different life strategies

• Lampreys have only existed for about 360 million years

• Lampreys have a common ancestor with dinosaurs

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What is the main limitation in studying the evolutionary history of lampreys?

• The scarcity of fossil lamprey specimens

• The difficulty in preserving lamprey skeletons and teeth

• The lack of research interest in lampreys

• The absence of lampreys in the fossil record

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What is the possible relationship between lampreys' diet and metamorphosis?

• Lampreys undergo metamorphosis to better adapt to their diet

• Lampreys switch to a flesh diet after completing metamorphosis

• Lampreys need a nourishing diet to survive the remodelling phase

• Lampreys' diet has no impact on their metamorphic lifecycle

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When did lampreys evolve a metamorphic lifecycle?

• During the Jurassic period

• Between 250 million and 200 million years ago

• Around 160 million years ago

• About 125 million years ago

What does the diversity of ancient lampreys suggest?

• Ancient lampreys had a wide range of feeding habits

• Ancient lampreys were more similar to hagfish than previously thought

• Ancient lampreys were not as diverse as modern lampreys

• Ancient lampreys evolved different oral apparatuses

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