Q: If a jumping spider's jump distance at 15°C is 5 cm and at 25°C is 10 cm, what is the percent increase in jump distance?

$$ \frac{10 - 5}{5} \times 100 = 100\% $$

Question 1

Jumping spiders are described as ectothermic. What does this imply about their metabolism and activity levels in relation to ambient temperature?

Accepted Answer

Their metabolism and activity levels increase as ambient temperature increases.

Question 2

In an experiment, a jumping spider's average jump distance is measured at four different temperatures. Which variable is the independent variable in this experiment?

Accepted Answer

The ambient temperature

Question 3

Which of the following best explains why jumping spiders can leap many times their body length?

Accepted Answer

They have powerful leg muscles that propel them with great speed and accuracy.

Question 4

If a jumping spider's jump distance at 15°C is 5 cm and at 25°C is 10 cm, what is the percent increase in jump distance?

Accepted Answer

$$ \frac{10 - 5}{5} 	imes 100 = 100\% $$

Question 5

Which statement best describes the role of sexual selection in the evolution of peacock spiders?

Accepted Answer

Sexual selection favors individuals with colorful ornaments and complex courtship dances that attract mates.

Question 6

Why do female peacock spiders prefer males with more colorful ornaments and complex dances?

Accepted Answer

Colorful ornaments and complex dances are indicators of good health and genetic quality.

Question 7

Which of the following is a direct result of sexual selection in peacock spiders?

Accepted Answer

Retention of highly colorful ornaments in male populations.

Question 8

Compare the two types of eukaryotic cell divisions. Which statement is correct?

Accepted Answer

Mitosis produces two identical cells, while meiosis produces four genetically unique cells.

Question 9

Which of the following best describes the essential role of the DNA molecule in living organisms?

Accepted Answer

DNA stores genetic information and directs the synthesis of proteins.

Question 10

A mutation occurs in the DNA of a peacock spider, resulting in a new color pattern. Which process allows this trait to be passed to offspring?

Accepted Answer

Meiosis during gamete formation

Question 11

If a population of peacock spiders is exposed to a new predator that prefers brightly colored males, what evolutionary outcome is most likely over several generations?

Accepted Answer

Decrease in the frequency of brightly colored males due to natural selection.

Question 12

Which formula correctly represents the calculation of average jump distance from 10 trials?

Accepted Answer

$$ 	ext{Average jump distance} = \frac{\sum_{i=1}^{10} d_i}{10} $$

Question 13

Which of the following scenarios best illustrates the concept of adaptation in jumping spiders?

Accepted Answer

Spiders develop longer legs over generations to improve jumping ability.

Question 14

Which process is responsible for the production of gametes in peacock spiders?

Accepted Answer

Meiosis

Question 15

A scientist observes that jumping spiders jump farther at higher temperatures. Which hypothesis is best supported by this observation?

Accepted Answer

Jumping spider muscle performance increases with temperature due to their ectothermic physiology.

Question 16

Which of the following is NOT a function of DNA in cells?

Accepted Answer

Catalyzing chemical reactions

Question 17

If a jumping spider's body length is 1 cm and it can jump 10 times its body length, what is its jump distance?

Accepted Answer

$$ 1 	ext{ cm} 	imes 10 = 10 	ext{ cm} $$

Question 18

Which of the following best explains why courtship dances in peacock spiders are complex and varied?

Accepted Answer

Complex dances increase the likelihood of attracting a mate and passing on genes.

Question 19

Which of the following best describes the difference between mitosis and meiosis?

Accepted Answer

Mitosis results in two diploid cells; meiosis results in four haploid cells.

Jumping Spiders, Cell Division, and DNA: Key Concepts in General Biology

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