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S1 English: Comparatives and Superlatives (Paper 3: challenge)
Tutor Prep Guide · parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety
S1 English: Comparatives and Superlatives (Paper 3: challenge)
Paper three works on ranks, key steps and proportions of endemic species.
Direct answers Count ranks and branches first, then do the percentage arithmetic, and answer last.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: S1 English: Comparatives and Superlatives |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationHow are the seven ranks ordered from largest to smallest?
- FoundationHow many ranks are commonly used in classification?
- FoundationFive two-way features can separate at most how many species?
- IntermediateHow many steps does a dichotomous key need to separate 40 species?
- IntermediateTwelve percentage points of 1 500 plants are endemic to Hong Kong. How many species is that?
- IntermediateFrom the previous item, what percentage of all plants is endemic?
- ChallengeWhat percentage of 1 500 animals are the 45 mammal species?
- ChallengeTwo kingdoms each have two phyla, and one phylum has three classes. How many units in total?
- ChallengeOrganisms in a higher rank share more features. Is this right?
- Error redoTwo organisms with the same common name are the same species. Is this right?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | Kingdom, phylum, class, order, family, genus, species | The ranks run from the broadest to the finest, and species is the finest. |
| 2 | 7 ranks | Kingdom, phylum, class, order, family, genus and species make seven ranks. |
| 3 | 32 species | Two to the power five equals 32. |
| 4 | 6 steps | Five steps give only 32 branches, short of 40, while six steps give 64. |
| 5 | 180 species | One thousand five hundred times 0.12 equals 180. |
| 6 | 12.0 Percentage points | One hundred eighty divided by one thousand five hundred times one hundred gives 12.0 percentage points. |
| 7 | 3.0 Percentage points | Forty-five divided by one thousand five hundred times one hundred gives 3.0 percentage points. |
| 8 | 12 units | Counting two kingdoms, four phyla and three classes of one phylum gives 12 units in all. |
| 9 | No. Lower ranks share more features | Species is the finest rank, so its members are the most alike and share the most features. |
| 10 | No. Common names vary by place, so the scientific name decides | Common names are confusing, while the scientific name of genus plus epithet names one species. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
Paper four clears the conductor, insulator and battery direction misconceptions.Tutor Registration →
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