Q4 L1 · Quiz
Weekly quiz · Capstone Launch: A Biology Question for Our Community
Assessment Appendix — AP Biology · Week 28 Quiz
Quarter 4, Week 1 · Lessons 4.1–4.2 · Capstone Launch: A Biology Question for Our Community; Continuing Evolution and Speciation: Resistant Weeds and Desert Species
| # | Item | Answer / look-fors / scoring | Pts | Lesson · standards |
|---|---|---|---|---|
| 1 | Choose the word or phrase that best completes the sentence: The ________ turns our garden research into knowledge our community can use, built on careful questions and evidence. | (D) capstone. | 1 | L4.1 · CED Topic 8.6; LO 8.6.A; Skill 3.A, 3.D |
| 2 | Producers in a garden capture 25,000 kJ of energy. Assuming 10% transfer efficiency, how much energy reaches the secondary consumers (spiders that eat aphids)? | (B) 250 kJ. Two transfers: 25,000 × 0.1 × 0.1 = 250 kJ. | 1 | L4.1 · CED Topic 8.6; LO 8.6.A; Skill 3.A, 3.D; item skill 5.A |
| 3 | An F₂ cross produced 244 purple-stem and 76 green-stem seedlings. A student tests the 3:1 hypothesis with chi-square (critical value 3.84, df = 1, p = 0.05). Which is correct? | (D) χ² = 0.27; fail to reject the null hypothesis. Expected 240:80; χ² = (244−240)²/240 + (76−80)²/80 = 0.27; compare with 3.84 → fail to reject. | 1 | L4.2 · CED Topic 7.8, 7.10; LO 7.8.A, 7.10.A, 7.10.B; Skill 4.B, 6.E; item skill 5.C |
| 4 | An aphid population on garden kale has N = 300, K = 1000, and r_max = 0.2 per day. Using dN/dt = r_max·N·(K − N)/K, what is the population growth rate? | (C) 42 aphids/day. 0.2 × 300 × (1000 − 300)/1000 = 42. | 1 | L4.1 · CED Topic 8.6; LO 8.6.A; Skill 3.A, 3.D; item skill 5.A |
| 5 | In a population of 400 radish plants in Hardy-Weinberg equilibrium, 9% show the recessive white-root phenotype. How many plants are expected to be heterozygous? (Illustrative data.) | (A) 168. q = √0.09 = 0.3; p = 0.7; 2pq = 0.42; × 400 = 168. | 1 | L4.2 · CED Topic 7.8, 7.10; LO 7.8.A, 7.10.A, 7.10.B; Skill 4.B, 6.E; item skill 5.A |
| 6 | Short Free Response: Answer each part using evidence from this week’s garden investigations. | 4 | L4.1, 4.2 · CED Topic 8.6; LO 8.6.A; Skill 3.A, 3.D; CED Topic 7.8, 7.10; LO 7.8.A, 7.10.A, 7.10.B; Skill 4.B, 6.E | |
| (a) Our capstone question is ___. | Look for: Look for a testable question, specific stakeholders, and a named task. | 1 | ||
| (b) Our stakeholders are ___. | Look for: Look for a testable question, specific stakeholders, and a named task. | 1 | ||
| (c) One task I own is ___. | Look for: Look for a testable question, specific stakeholders, and a named task. | 1 | ||
| (d) Explain how resistance evolves. | Spraying kills susceptible plants; resistant individuals survive and reproduce, increasing resistance allele frequency. | 1 |