Biology Quiz: Analyze Population Variation Data

What this quiz covers

This quiz focuses on Analyze Population Variation Data, giving you a quick way to practice the rules, question types, and explanations that matter most for Biology.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

Question 1

1. Population B, because its minimum tail length is longer.
2. Population A, because its tail lengths span a wider range of values. (correct answer)
3. Both populations show the same variation because they are the same species.
4. Neither population shows variation because each has a single minimum and maximum.

Question 2

1. Discrete variation with three distinct categories and no intermediates
2. Continuous variation with most individuals near the middle values (approximately bell-shaped) (correct answer)
3. No variation because all finches have similar beak depths
4. Bimodal distribution with two equal peaks at 7 mm and 14 mm

Question 3

1. $18$ mm (correct answer)
2. $40$ mm
3. $11$ mm
4. $29$ mm

Question 4

1. Continuous variation, because spot number can take any value between 0 and 10.
2. Discrete variation, because spot number is counted in whole-number categories. (correct answer)
3. No variation, because most ladybugs have 4 or 6 spots.
4. Bimodal variation, because there are exactly two spot-number categories.

Question 5

1. Population B has greater variation in stem height because its minimum is higher
2. Population A has greater variation in stem height because it has a wider range of values (correct answer)
3. Both populations have the same variation because they are the same species
4. Neither population shows variation because only minimum and maximum are listed

Question 6

1. $4.3$ cm (correct answer)
2. $22.7$ cm
3. $13.5$ cm
4. $9.2$ cm

Question 7

1. $2.4$ cm (correct answer)
2. $14.8$ cm
3. $8.6$ cm
4. $6.2$ cm

Question 8

1. $4.4$ cm (correct answer)
2. $12.6$ cm
3. $8.2$ cm
4. $20.8$ cm

Question 9

1. $1.8$ cm (correct answer)
2. $5.0$ cm
3. $3.2$ cm
4. $8.2$ cm

Question 10

1. $5$ cm
2. $6$ cm (correct answer)
3. $12$ cm
4. $18$ cm

Question 11

1. Flower color shows continuous variation because the counts are different for each color.
2. Flower color shows discrete variation because individuals fall into distinct categories. (correct answer)
3. Flower color shows no variation because all plants have flowers.
4. Flower color shows a normal (bell-shaped) distribution because pink is the most common.

Question 12

1. Fur color shows continuous variation because the counts form a bell-shaped pattern.
2. Fur color shows discrete variation because rabbits fall into distinct color categories. (correct answer)
3. There is no variation because gray is the most common fur color.
4. The range of fur color is $44 - 18 = 26$ colors.

Question 13

1. Population B, because its values are closer to 7.3 cm.
2. Population A, because it has a wider spread of values (larger range). (correct answer)
3. Both populations show the same variation because they each have 8 measurements.
4. Neither population shows variation because both have tail lengths near 7 cm.

Question 14

1. Blood type shows continuous variation because there are many possible values.
2. Blood type shows discrete variation because individuals fall into four distinct categories. (correct answer)
3. There is no variation because type O is the most common.
4. The range of blood types is $32 - 6 = 26$.

Question 15

1. The finches show discrete variation because beak depth falls into only two categories (small vs. large).
2. The finches show continuous variation, with most individuals near 9 mm and fewer at the extremes. (correct answer)
3. There is no variation because all finches have beak depths between 6 and 12 mm.
4. The distribution is bimodal because the highest counts occur at both 6 mm and 12 mm.

Question 16

1. $1.7\text{ cm}$ (correct answer)
2. $13.1\text{ cm}$
3. $0.6\text{ cm}$
4. $7.4\text{ cm}$

Question 17

1. Discrete variation with separate categories and no intermediate values.
2. Continuous variation with most individuals near the middle of the range. (correct answer)
3. No variation because most individuals are between 16–18 mm.
4. A perfectly uniform distribution because each shell length occurs equally often.

Question 18

1. Fur color shows discrete variation with three categories present in the population (correct answer)
2. Fur color shows continuous variation because the numbers for each color are different
3. There is no variation because brown is the most common color
4. Fur color shows a normal (bell-shaped) distribution centered on white

Question 19

1. Discrete variation, because wing length falls into only a few separate categories with no intermediate values
2. No variation, because all finches have wing lengths close to 16 mm
3. Continuous variation, because wing length shows a range of measurable values with intermediates (correct answer)
4. Bimodal variation, because there are two equally high peaks at 14 mm and 18 mm

Question 20

1. Population 1, because more individuals are near 10 mm
2. Population 2, because the values span a wider range (correct answer)
3. Population 1, because it has repeated values
4. They show the same variation because both have 8 measurements