A typical Hummingbird’s heartbeat frequency per minute is __________.
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Answer: D. more than 1200 times
Explanation
Hummingbird hearts beat at extreme frequencies exceeding 1200 times per minute. Rapid metabolism demands unprecedented cardiovascular performance during flight. High frequency heartbeats sustain intense hovering muscle contractions. Hummingbirds have the highest metabolic rates among all vertebrate animals. Wing beat frequencies can reach dozens of strokes per second continuously. Cardiovascular adaptations allow tiny birds to support extreme physical exertion.
Ornithologists study avian physiology to understand extreme metabolic adaptations. High energy demands require hummingbirds to feed constantly on nectar. Energy conservation during torpor helps birds survive cold resting nights. Option A underestimates the incredible heart rate of active hummingbirds. Option B falls short of the maximum recorded beats per minute. Option C is less precise than the specified threshold of 1200 times.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
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