Variation & Survival Advantage

Question 1

In a garden, most ladybugs are bright red, but a few are dark brown. A bird that eats ladybugs prefers the bright red ones because they are easier to see. Which ladybugs are most likely to survive and have babies?

Accepted Answer

The dark brown ladybugs

Answer

The ladybugs that can fly the fastest

Answer

The bright red ladybugs

Answer

The biggest ladybugs in the garden

Question 2

In a pond there are 120 fish. 45 of the fish have a striped pattern, 75 have a solid color, and none have both patterns. If one fish is chosen at random, what is the probability that it has a striped pattern?

Accepted Answer

3/8

Answer

3/4

Answer

1/2

Answer

3/5

Question 3

Scientists have found that ladybugs contain a bitter chemical that makes birds avoid them when they see a bright red color. In a garden, some ladybugs have bright red shells with black spots and others have dull orange shells with black spots. Which characteristic would most likely give a ladybug the greatest advantage for surviving when birds hunt for insects?

Accepted Answer

Bright red shells with black spots

Answer

Dull orange shells with black spots

Answer

Longer antennae

Answer

Larger body size

Try three questions

In a garden, most ladybugs are bright red, but a few are dark brown. A bird that eats ladybugs prefers the bright red ones because they are easier to see. Which ladybugs are most likely to survive and have babies?

In a pond there are 120 fish. 45 of the fish have a striped pattern, 75 have a solid color, and none have both patterns. If one fish is chosen at random, what is the probability that it has a striped pattern?

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