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Life Sciences Past Paper Question 1 Drill Level 1: Knowledge & Recall
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Q1 MCQ Drill: 2018 Life Sciences P2 (2018 NSC October/November National Examination)

7 multiple-choice questions taken verbatim from Section A of the official 2018 NSC October/November National Examination Life Sciences Paper 2, auto-marked against the official marking guideline. Questions that rely on diagrams or graphs are excluded - see the full paper for those.

Question 1 of 7 2 Marks

What is the scientific name of the fossil, Mrs Ples?

Official Marking Guideline Rationale:
Correct Answer: C. Correct - matches the official DBE marking guideline.
Marking Criteria:
• Official marking guideline answer (2 marks) → C (2018 NSC October/November National Examination - Life Sciences Paper 2, Question 1.1.1)
Question 2 of 7 2 Marks

Which ONE of the following is a structural feature of a bipedal organism?

Official Marking Guideline Rationale:
Correct Answer: B. Correct - matches the official DBE marking guideline.
Marking Criteria:
• Official marking guideline answer (2 marks) → B (2018 NSC October/November National Examination - Life Sciences Paper 2, Question 1.1.2)
Question 3 of 7 2 Marks

QUESTIONS 1.1.4 AND 1.1.5 ARE BASED ON THE TIMELINE BELOW SHOWING THE POSSIBLE EVOLUTION OF SOME HOMINIDS. Time (mya) Which species inhabited the Earth for the longest period of time?

Official Marking Guideline Rationale:
Correct Answer: B. Correct - matches the official DBE marking guideline.
Marking Criteria:
• Official marking guideline answer (2 marks) → B (2018 NSC October/November National Examination - Life Sciences Paper 2, Question 1.1.4)
Question 4 of 7 2 Marks

QUESTIONS 1.1.4 AND 1.1.5 ARE BASED ON THE TIMELINE BELOW SHOWING THE POSSIBLE EVOLUTION OF SOME HOMINIDS. Time (mya) How many years ago did the genus Homo first appear?

Official Marking Guideline Rationale:
Correct Answer: A. Correct - matches the official DBE marking guideline.
Marking Criteria:
• Official marking guideline answer (2 marks) → A (2018 NSC October/November National Examination - Life Sciences Paper 2, Question 1.1.5)
Question 5 of 7 2 Marks

QUESTIONS 1.1.4 AND 1.1.5 ARE BASED ON THE TIMELINE BELOW SHOWING THE POSSIBLE EVOLUTION OF SOME HOMINIDS. Time (mya) The list below describes some evolutionary events. (i) Each population undergoes natural selection differently and independently. (ii) There is no gene flow between the two populations. (iii) A population becomes separated. (iv) A geographical barrier forms. (v) The two populations become different phenotypically and genotypically. Which ONE of the following combinations gives the CORRECT sequence of these events?

Official Marking Guideline Rationale:
Correct Answer: C. Correct - matches the official DBE marking guideline.
Marking Criteria:
• Official marking guideline answer (2 marks) → C (2018 NSC October/November National Examination - Life Sciences Paper 2, Question 1.1.6)
Question 6 of 7 2 Marks

QUESTIONS 1.1.4 AND 1.1.5 ARE BASED ON THE TIMELINE BELOW SHOWING THE POSSIBLE EVOLUTION OF SOME HOMINIDS. Time (mya) QUESTIONS 1.1.8 AND 1.1.9 ARE BASED ON THE INFORMATION BELOW. In a certain species of rabbits, body colour is controlled by two alleles where black (B) is dominant to white (b). Ear shape is controlled by a second gene. The allele for wide ears (E) is dominant to the allele for narrow ears (e). What is the possible genotype for a black rabbit with narrow ears?

Official Marking Guideline Rationale:
Correct Answer: D. Correct - matches the official DBE marking guideline.
Marking Criteria:
• Official marking guideline answer (2 marks) → D (2018 NSC October/November National Examination - Life Sciences Paper 2, Question 1.1.8)
Question 7 of 7 2 Marks

QUESTIONS 1.1.4 AND 1.1.5 ARE BASED ON THE TIMELINE BELOW SHOWING THE POSSIBLE EVOLUTION OF SOME HOMINIDS. Time (mya) QUESTIONS 1.1.8 AND 1.1.9 ARE BASED ON THE INFORMATION BELOW. In a certain species of rabbits, body colour is controlled by two alleles where black (B) is dominant to white (b). Ear shape is controlled by a second gene. The allele for wide ears (E) is dominant to the allele for narrow ears (e). What is the possible genotype of gametes produced by a white rabbit with narrow ears?

Official Marking Guideline Rationale:
Correct Answer: B. Correct - matches the official DBE marking guideline.
Marking Criteria:
• Official marking guideline answer (2 marks) → B (2018 NSC October/November National Examination - Life Sciences Paper 2, Question 1.1.9)
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