# Life Sciences Grade 12 P2 Eastern Cape Mock 2013 Memo (Eng) > Grade 12 Life Sciences Paper 2 memorandum from the Eastern Cape Mock Exam 2013 (English), 8 pages. Read online or download the free PDF. - Page: https://www.hlayiso.com/library/gr12-lfsc-p2-memo-eng/270754bb-c18e-4f50-92ed-d6d8bddf2f32 - Updated: 2026-09-27 - Subject: Life Sciences - Grade: Grade 12 - Document type: Memorandum - Year: 2013 - Exam period: Eastern Cape Mock Exam - Paper: 2 - Curriculum: CAPS - Pages: 8 Breadcrumbs: [Home](https://www.hlayiso.com/) › [Library](https://www.hlayiso.com/library) › [Grade 12](https://www.hlayiso.com/library/grade-12) › [Life Sciences](https://www.hlayiso.com/library/grade-12/life-sciences) › [Life Sciences Grade 12 P2 Eastern Cape Mock 2013 Memo (Eng)](https://www.hlayiso.com/library/gr12-lfsc-p2-memo-eng/270754bb-c18e-4f50-92ed-d6d8bddf2f32) ## About this document Life Sciences · Grade 12 · Eastern Cape Mock Exam · 2013. Memorandum, 8 pages. Read online or download the PDF. 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Layout, diagrams and tables may not survive extraction. ### Page 1 Downloaded from hlayiso.com Province of the EASTERN CAPE EDUCATION NATIONAL SENIOR CERTIFICATE GRADE 12 SEPTEMBER 2013 LIFE SCIENCES P2 MEMORANDUM MARKS: 150 This memorandum consists of 7 pages. ### Page 2 Downloaded from hlayiso.com 2 LIFE SCIENCES P2 (SEPTEMBER 2013) SECTION A QUESTION 1 1.1 1.1.1 A  1.1.2 A  1.1.3 B  1.1.4 C  1.1.5 A  1.1.6 A  1.1.7 C  1.1.8 D  1.1.9 D  1.1.10 C  (10 x 2) (20) 1.2 1.2.1 Courtship  behaviour (1) 1.2.6 Metamorphosis  (1) 1.2.2 Immigration  (1) 1.2.7 Vitreous Humour  (1) 1.2.3 Precocial  (1) 1.2.8 Eustachian  tube (1) 1.2.4 Succession  (1) 1.2.9 Sustainable  (1) 1.2.5 Amniocentesis  (1) 1.2.10 Geometric /Log- / Logarithmic phase (1) (10) 1.3 1.3.1 None  (2) 1.3.5 Both A and B  (2) 1.3.2 A only  (2) 1.3.6 None  (2) 1.3.3 Both A and B  (2) 1.3.7 B only  (2) (14) 1.3.4 A only  (2) 1.4 1.4.1 A Epidermis  C Erector / hair muscle (2) 1.4.2 Dilation / will become bigger / increased blood flow (1) 1.4.3 More blood flow to the surface  More heat reaches the surface  More heat is lost to the environment  Causing the body to cool down  (Any 3 x 1) (3) TOTAL SECTION A: 50 ### Page 3 Downloaded from hlayiso.com (SEPTEMBER 2013) LIFE SCIENCES P2 3 SECTION B QUESTION 2 2.1 2.1.1 Mrs Abrahams:  Feels the pinprick thus able to receive information from the receptor.   Sensory neuron from the fingertip was working correctly.   Motor neurons carrying instructions to the muscles were not working correctly.  Mr Abrahams:  Could not feel the pinprick thus unable to receive information from the receptor.   Sensory neuron from fingertip was not working correctly.   He could move his hand meaning that he could get instructions to the muscles.  (6) 2.1.2  They would have been unable   to sense the pinprick / to move their hand  No information could have travelled to or from the brain  (3) 2.1.3  Holds head and spinal cord in the correct position   there might be damage to the spinal cord due to the impact of accident and a brace prevents a worsening of the situation.   This might result in paralysis.  (3) 2.2 2.2.1 12,5 % (1) 2.2.2 Memory loss  (1) 2.2.3  had abnormal clumps  and  tangled bundles of nerve fibres  (2) 2.2.4 organ failure /infections (1) ### Page 4 Downloaded from hlayiso.com 4 LIFE SCIENCES P2 (SEPTEMBER 2013) 2.2.5 Guideline for the assessing of the graph: Correct type of graph and the drawing of bars. 1 Title of graph 1 Correct label X and Y-axes 1 Correct scale X and Y-axes 1 Plotting of points 1 mark for plotting 1 to 3 points correctly 1 2 marks for plotting all 5 points correctly 2 (6) Percentage of patients with AD over different age groups 25 20 Percentage (%) 15 23.6 10 5 11.1 6.6 1.4 2.8 0 65-69 70-74 75-79 80-84 85+ Age groups (years) NOTE: If the wrong type of graph is drawn, 1 mark will be lost for:  ‘Correct type of graph and joining of points’ If labels of the axes are transpose then 2 marks will be lost for:  ‘Correct label and scale for X- and Y-axes 2.3 2.3.1 A; Iris  B: Pupil  C: Sclera  (3) 2.3.2 A decrease in light intensity / dim light conditions (1) 2.3.3  The circular muscles of the iris relax   The radial muscles of the iris contract   This causes the pupil to dilate  (3) [30] ### Page 5 Downloaded from hlayiso.com (SEPTEMBER 2013) LIFE SCIENCES P2 5 QUESTION 3 3.1 3.1.1 Dispersal The movement  of individuals, or the part responsible for reproduction, (such as seeds, spores, larvae) into or out of a population area.  (3) 3.1.2  Emigration   Immigration   Migration  (3) 3.2 3.2.1 (a) Habitat: is the place  where plants and animals  live. (2) (b) Conservation: is the wise management of the earth’s resources  so that it yields the greatest sustainable benefit for current and future generations  while maintaining its potential to meet the needs of future generations. (2) 3.2.2 The animals have a reputation for attacking livestock.  (1) 3.2.3  road accidents   incidental snaring /use of trapping devices  competition with other larger carnivores  predation  with other larger carnivores Mark first TWO only (2) 3.2.4 Education  (1) 3.2.5 “the killing of livestock by wild dogs rarely occurs in practice”  (1) 3.3 3.3.1 7,3  billion  (7,2 – 7,4) (2) 3.3.2  Developing countries: Geometric /J-shape  Developed countries: Logistic /S-shape/Sigmoid (2) 3.3.3  Since 1950  there is  a dramatic increase  in the population size of developing countries  showing an increase in fertility rate  (3) 3.4 3.4.1 Secondary succession   In the first year the ground is colonised by species 1   and by new species in year 2.   This is typical of secondary succession where soil already exists  (3) 3.4.2 Species 3  and 4  (2) 3.4.3 Species 1  (1) 3.4.4 Year 2  (1) 3.4.5  It is most probably a slow-growing tree.   Species 4 could not compete successfully with species 2 in year 2.  Species 4 needed more time to acclimatise (Any 1 x 1) (1) [30] TOTAL SECTION B: 60 ### Page 6 Downloaded from hlayiso.com 6 LIFE SCIENCES P2 (SEPTEMBER 2013) SECTION C QUESTION 4 4.1 4.1.1 Gametophyte  (1) 4.1.2 Yes  (1) 4.1.3 (a) haploid /n (1) (b) haploid /n (1) (c) haploid /n (1) (d) diploid /2n (1) 4.1.4 sexually  (1) 4.1.5 water  (1) 4.2 4.2.1 Predation  (2) 4.2.2 (a) Rabbits ±135  (134 – 136) (1) (b) Lynx ±75  (74 – 76) (1) 4.2.3 lynx population increased  (1) 4.2.4 More food available  for the young one to grow  and less competition for food  max. (2) 4.2.5 rabbit population decreased  (1) 4.2.6 An animal that hunts, catches and kills another animal for its food.  (2) 4.2.7 Secondary consumer / Carnivore (1) 4.2.8 1865  (1) ### Page 7 Downloaded from hlayiso.com (SEPTEMBER 2013) LIFE SCIENCES P2 7 4.3 - Under the influence of Follicle Stimulating Hormone (FSH)  - produced by the hypophysis/pituitary gland - the follicle of the ovary  matures  - to become a Graafian follicle  - The Graafian follicle produces the hormone oestrogen  - which starts the preparation of the uterus for attachment  - of the fertilised egg by making the endometrium:  : - Thicker/more vascular / more glandular  - After the ovum is released  by ovulation  - the Lutenising hormone (LH) helps convert the ruptured follicle into the corpus luteum - The corpus luteum  produces the hormone progesterone  - which continues the preparation of the uterus  - just in case fertilisation takes place  - If fertilisation takes place the embryo is implanted in the uterus  - The corpus luteum remains active and continue producing progesterone  - Which maintains the endometrium during pregnancy  - Later the placenta  also produces progesterone to maintain the endometrium - The high levels of progesterone inhibit the secretion of FSH  - And thus further egg production is stopped  - If fertilisation does not take place then the corpus luteum disintegrates  - and stop producing progesterone  - FSH inhibition stops  - Egg production begins once more  - The endometrial lining of the uterus is removed through menstruation  (Any 17 x 1) (17) ASSESSING THE PRESENTATION OF THE ESSAY Marks Descriptions 3 Well structured – demonstrates insight and understanding of question 2 Minor gaps in the answer 1 Attempted but with significant gaps in the answer 0 Not attempted/nothing written other than question number Synthesis (3) TOTAL SECTION C: 40 GRAND TOTAL: 150 ### Page 8 Downloaded from hlayiso.com ## Related documents - [Gr12 LFSC P2 S13 QP Eng](https://www.hlayiso.com/library/gr12-lfsc-p2-s13-qp-eng/16f72da9-fb39-41cf-a478-707fa0b6b9df) — Life Sciences · QP · 2013 · Eng - [LEWENSWET V1 MEMO](https://www.hlayiso.com/library/lewenswet-v1-memo/3850ca57-61f3-4812-a560-de20e0284fb7) — Life Sciences · Memo · 2013 - [Biology P2 HG 2013 Memo](https://www.hlayiso.com/library/biology-p2-hg-2013-memo/82034e08-8dd2-48a0-80c8-ce697be5ca86) — Life Sciences · Memo · 2013 - [Life Sciences P2 Nov 2013 Memo Eng](https://www.hlayiso.com/library/life-sciences-p2-nov-2013-memo-eng/437fcf1b-1f18-4a51-a9a3-e5a33faef809) — Life Sciences · Memo · 2013 · Eng - [LIFE SCIENCES P2 GR12 MEMO SEPT2022 Afrikaans](https://www.hlayiso.com/library/life-sciences-p2-gr12-memo-sept2022-afrikaans/7cca7322-63ed-4fb0-a67b-5df57d647597) — Life Sciences · Memo · 2022 · Afr - [LIFE SCIENCES P2 MEMO SEPT2021 Sesotho](https://www.hlayiso.com/library/life-sciences-p2-memo-sept2021-sesotho/83f68bb0-0ec1-4a72-a70a-994a6f9af99e) — Life Sciences · Memo · 2021 · Sesotho ## More from Grade 12 Life Sciences - [LIFE SCIENCES QP GR12 JUNE 2025 ENG D watermark](https://www.hlayiso.com/library/life-sciences-qp-gr12-june-2025-eng-d-watermark/138939cb-4757-4989-99d7-c9cb21429a5c) — QP · 2025 · Eng - [Life Sciences Grade 12 NSC QP March 2025 KZN](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-qp-march-2025-kzn/b1598f8e-58e0-4c09-b513-b9f61ae73c47) — QP · 2025 - [Life Sciences Grade 12 NSC P2 MEMO September 2025 Mpumalanga](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-p2-memo-september-2025-mpumalanga/17b4cc42-641c-4d7d-9c53-6bac113ce83c) — Memo · 2025 - [Life Sciences Grade 12 NSC P1 QP September 2025 Mpumalanga](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-p1-qp-september-2025-mpumalanga/be917127-6071-4190-b900-3c475d5bfdd4) — QP · 2025 - [Life Sciences Grade 12 NSC P1 QP September 2025 North West](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-p1-qp-september-2025-north-west/9dc29799-a675-40eb-9573-df7341b3572f) — QP · 2025 - [Life Sciences P2 May-June 2025 Afr](https://www.hlayiso.com/library/life-sciences-p2-may-june-2025-afr/f068fe02-7f70-4bf4-91ad-4ead880d1a88) — QP · 2025 · Afr ## Collection - [Grade 12 past papers](https://www.hlayiso.com/grade-12/past-papers) --- Hlayiso: free CAPS and IEB past papers, memos, notes and study guides for South African learners. 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