Invasive Species quiz

More questions about Invasive Species

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   What vine did the US government once pay farmers to plant?

   Answer: Kudzu

   Why: To fight soil erosion in the 1930s, some farmers were paid as much as $8 an acre to plant kudzu on gullied land.

2. 2 Medium

   Where did the swarms behind 'killer bees' escape in 1957?

   Answer: Brazil

   Why: From Brazil the hybrid bees spread south to northern Argentina and north to Texas, where the first wild US colony was found in 1990.

3. 3 Hard

   Which fish helped wipe out about 200 native species in Lake Victoria?

   Answer: Nile perch

   Why: Nile perch were stocked partly to turn the lake's small, bony cichlids into a bigger, more valuable catch.

4. 4 Easy

   Why did Australia bring in cane toads in 1935?

   Answer: To eat beetles

   Why: There is no evidence the toads ever cut cane beetle numbers; the beetles' eggs and larvae lie buried underground.

5. 5 Medium

   Where in Europe did the Asian hornet first turn up?

   Answer: France

   Why: Genetic work suggests the whole French invasion may have started from a single mated queen from eastern China.

6. 6 Hard

   Which painkiller in dead-mouse baits kills Guam's snakes?

   Answer: Paracetamol

   Why: Each bait mouse is attached to cardboard and paper streamers so it catches in the upper branches of the forest canopy.