Cane Toad Invaders

Why were cane toads originally brought to Australia?

• For scientific research

• To eat beetles destroying crops

• To be kept as pets

• To control the snake population

What is the maximum size that cane toads can grow to?

• 15 centimeters long

• 22 centimeters long

• 10 centimeters long

• 30 centimeters long

Why can't Australian predators eat cane toads?

• The toads are too fast

• The toads are extremely poisonous

• The toads can hide effectively

• The toads are too large

Tags

NGSS.MS-LS2-2

How far have cane toads spread from their original introduction point in Australia?

• More than 1,000 kilometers

• More than 500 kilometers

• More than 1,500 kilometers

• More than 2,000 kilometers

What happens to the food supply in areas where cane toads live?

• It remains the same

• It becomes more abundant

• It becomes scarce

• It increases in variety

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What recent physical change have scientists observed in cane toads?

• Smaller size overall

• Longer tongues

• Bigger, more muscular legs

• Smaller eyes

What caused the physical change in cane toads?

• Climate change

• Gene mutations

• Increased exercise

• A change in diet

Tags

NGSS.MS-LS1-5

NGSS.MS-LS3-1

Why is having bigger legs an advantage for cane toads?

• It helps them reach new food sources first

• It makes them more attractive to mates

• It helps them hide better

• It helps them outrun predators

Tags

NGSS.MS-LS4-4

What is the result of cane toads with bigger legs being more likely to survive and reproduce?

• The toads become less poisonous

• The average size of cane toads decreases

• The toad population decreases

• Big-legged toads become more common

Tags

NGSS.MS-LS4-4

What principle explains why big-legged cane toads are becoming more common?

• Survival of the fittest

• Natural selection

• Genetic drift

• Mutation effect

Tags

NGSS.MS-LS4-4