Install QuizVortex App
Play offline · Home screen icon · Faster loading
In-depth, difficult trivia on the world's rarest and most threatened species.
1. What key strategy has helped bring the black-footed ferret back from being declared extinct in the wild in North America?
💡 The black-footed ferret was thought extinct until a small population was found in 1981; captive breeding and reintroduction have since helped rebuild wild populations.
2. Which gorilla subspecies, found in the Virunga mountains, saw population increases due to intensive conservation, unlike most great apes?
💡 Mountain gorillas are one of the few great ape populations to see an increase due to decades of intensive conservation efforts in Rwanda, Uganda, and DR Congo.
3. Which porpoise species, found only in Mexico's Gulf of California, is the most endangered marine mammal in the world?
💡 The vaquita is critically endangered with an estimated population of fewer than 20 individuals, primarily due to illegal gillnet fishing.
4. What is a 'genetic bottleneck', a concern for many critically endangered species?
💡 A genetic bottleneck occurs when a population's size is drastically reduced, leading to loss of genetic diversity and increased vulnerability to disease and inbreeding.
5. Which primate, found only in Madagascar, is critically endangered and known for its unique elongated middle finger?
💡 The aye-aye, a nocturnal lemur, is critically endangered and known for its unusual thin middle finger used to extract grubs from wood.
6. Which is considered one of the rarest big cats, with fewer than 60 individuals believed to remain in the wild?
💡 The South China Tiger is considered possibly extinct in the wild, with none confirmed in decades and only a small number in captivity.
7. Which conservation term describes a species that exists only in captivity, with no wild population remaining?
💡 'Extinct in the Wild' is the IUCN classification for species that survive only in captivity or as a naturalized population outside their historic range.
8. What is the primary cause of decline for the critically endangered Sumatran Elephant?
💡 Rapid deforestation for palm oil plantations and agriculture has drastically reduced Sumatran elephant habitat, driving population decline.
9. Which species of turtle is considered the world's most endangered, with only a few individuals known to exist?
💡 The Yangtze Giant Softshell Turtle is considered possibly the world's most endangered turtle, with only a handful of known individuals remaining.
10. Which large flightless bird native to New Zealand is critically endangered, with predator control being key to its survival?
💡 The Kakapo, a critically endangered flightless parrot from New Zealand, has an intensive conservation program involving predator-free island sanctuaries.
11. Which endangered antelope species is native to the deserts of Central Asia and critically threatened by poaching for its horns?
💡 The Saiga Antelope, known for its distinctive large nose, has faced severe population crashes due to poaching and disease outbreaks.
12. What term describes the extinction of a species that occurs specifically due to human activity?
💡 Anthropogenic extinction refers specifically to species extinction caused directly or indirectly by human activities.
13. What key strategy has helped bring the black-footed ferret back from being declared extinct in the wild in North America?
💡 The black-footed ferret was thought extinct until a small population was found in 1981; captive breeding and reintroduction have since helped rebuild wild populations.
14. Which endangered whale species is primarily threatened by ship strikes and fishing gear entanglement along the North American Atlantic coast?
💡 The North Atlantic Right Whale, with fewer than 350 individuals remaining, is critically endangered mainly due to vessel strikes and entanglement in fishing gear.
15. Which species of turtle is considered the world's most endangered, with only a few individuals known to exist?
💡 The Yangtze Giant Softshell Turtle is considered possibly the world's most endangered turtle, with only a handful of known individuals remaining.
16. Which bird species is famously known as one of the rarest, with only a handful of individuals in captivity after being declared extinct in the wild?
💡 The California Condor was declared extinct in the wild in 1987 with only 27 individuals remaining, before a successful captive breeding and reintroduction program.
17. Which is the rarest canid (dog family) species in the world, found in the Ethiopian highlands?
💡 The Ethiopian Wolf is the rarest canid species, with fewer than 500 individuals remaining, restricted to isolated highland areas of Ethiopia.
18. Which primate, found only in Madagascar, is critically endangered and known for its unique elongated middle finger?
💡 The aye-aye, a nocturnal lemur, is critically endangered and known for its unusual thin middle finger used to extract grubs from wood.
19. What is a 'genetic bottleneck', a concern for many critically endangered species?
💡 A genetic bottleneck occurs when a population's size is drastically reduced, leading to loss of genetic diversity and increased vulnerability to disease and inbreeding.
20. Which bird species is famously known as one of the rarest, with only a handful of individuals in captivity after being declared extinct in the wild?
💡 The California Condor was declared extinct in the wild in 1987 with only 27 individuals remaining, before a successful captive breeding and reintroduction program.