Sub-topic 1
2024 · National One-Eighth
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Shared anatomical traits of turtles and lizards (true/false)
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Sub-topic 2
2017 · National One-Eighth
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Identifying a vertebrate class from a descriptive clue (larval gills, warm-bloodedness, egg-laying)
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Sub-topic 3
2026 · National Preliminary
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Key characteristics of the class aves (birds)
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Sub-topic 4
2026 · National Preliminary
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Structural adaptations of birds for efficient flight
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Sub-topic 5
2003 · National Semifinal
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The pouch as the distinguishing feature of marsupials
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Sub-topic 6
2003 · National Semifinal
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Specialized hooves as the distinguishing feature of ungulates
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Sub-topic 7
2013 · National Preliminary
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Homodont dentition in lizards (true/false)
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Sub-topic 8
2013 · National Preliminary
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Relative limb length in lizards (true/false)
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Sub-topic 9
2013 · National Preliminary
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Chondrichthyes: fish lacking an operculum and swim bladder
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Sub-topic 10
2013 · National Preliminary
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Osteichthyes as the class of bony fishes
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Sub-topic 11
2013 · National Preliminary
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Chondrichthyes as the class containing sharks and rays
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Sub-topic 12
2016 · National One-Eighth
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The swim bladder preventing bony fish from sinking
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Sub-topic 13
2022 · National Preliminary
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Riddle: catfish, a scaleless freshwater fish named for its whisker-like barbels
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Sub-topic 14
2023 · Regional Championship
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Riddle: the whale shark, the largest fish, a harmless filter feeder
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