# Agricultural Sciences Grade 11 P1 2017 Memo (Eng) > Grade 11 Agricultural Sciences Paper 1 memorandum from the Eastern Cape November 2017 (English), 9 pages. Read online or download the free PDF. - Page: https://www.hlayiso.com/library/agr-sciences-p1-gr11-memo-nov2011-english/d7000505-4af0-44c8-8d47-99f755ef4836 - Updated: 2026-09-27 - Subject: Agricultural Sciences - Grade: Grade 11 - Language: English - Document type: Memorandum - Year: 2017 - Exam period: Eastern Cape November - Paper: 1 - Curriculum: CAPS - Pages: 9 Breadcrumbs: [Home](https://www.hlayiso.com/) › [Library](https://www.hlayiso.com/library) › [Grade 11](https://www.hlayiso.com/library/grade-11) › [Agricultural Sciences](https://www.hlayiso.com/library/grade-11/agricultural-sciences) › [Agricultural Sciences Grade 11 P1 2017 Memo (Eng)](https://www.hlayiso.com/library/agr-sciences-p1-gr11-memo-nov2011-english/d7000505-4af0-44c8-8d47-99f755ef4836) ## About this document Agricultural Sciences · Grade 11 · Eastern Cape November · 2017 · English. Memorandum, 9 pages. Read online or download the PDF. Read it free online on the page above; download the PDF from there. ## Matching paper and memo - [AGR SCIENCES P1 QP NOV2017 English](https://www.hlayiso.com/library/agr-sciences-p1-qp-nov2017-english/86c9404f-9361-4cc7-b174-1cdada40645f) — QP · 2017 · Eng ## Document text Text extracted from the PDF. Layout, diagrams and tables may not survive extraction. ### Page 1 Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE GRADE 11 NOVEMBER 2017 AGRICULTURAL SCIENCES P1 MARKING GUIDELINE MARKS: 150 This marking guideline consists of 9 pages. ### Page 2 Downloaded from hlayiso.com 2 AGRICULTURAL SCIENCES P1 (EC/NOVEMBER 2017) SECTION A QUESTION 1 1.1 1.1.1 A √√ 1.1.2 C √√ 1.1.3 C √√ 1.1.4 D √√ 1.1.5 B √√ 1.1.6 C √√ 1.1.7 B √√ 1.1.8 A √√ 1.1.9 D √√ 1.1.10 B √√ (10 x 2) (20) 1.2 1.2.1 B only √√ 1.2.2 A only √√ 1.2.3 None √√ 1.2.4 B only √√ 1.2.5 Both A and B √√ (5 x 2) (10) 1.3 1.3.1 Sucrose √√ 1.3.2 Catenate √√ 1.3.3 Capillarity / Capillary √√ 1.3.4 Bulk density √√ 1.3.5 Mottled √√ (5 x 2) (10) 1.4 1.4.1 Ethanol √ 1.4.2 Structure √ 1.4.3 Carbon dioxide √ 1.4.4 Hygroscopic / Adhesion √ 1.4.5 Immobilisation √ (5 x 1) (5) TOTAL SECTION A: 45 Copyright reserved Please turn over ### Page 3 Downloaded from hlayiso.com (EC/NOVEMBER 2017) AGRICULTURAL SCIENCES P1 3 SECTION B QUESTION 2: BASIC AGRICULTURAL CHEMISTRY 2.1 Organic compounds 2.1.1 Identification of compound and mixture A – compound √ (1) B – mixture √ (1) 2.1.2 Difference between A (compound) and B (mixture):  Constituent of a mixture can be separated by physical means √ and constituents of a compound cannot √  Composition of a mixture can vary √ and composition of a compound is fixed √ (Any 1 x 2) (2) 2.1.3 Diagram showing chemical bond of water Criteria for marking of the diagram: 1 mark – hydrogen atoms √ 1 mark – oxygen atom √ 1 mark – correct bonding with valence electrons √ (3 x 1) (3) 2.2 Fats / Lipids 2.2.1 Classification of food A and B A – Saturated fat √ (1) B – Unsaturated fat √ (1) 2.2.2 Identification of fat to be included in a diet Unsaturated fat / fat in food B / Sunflower oil √ (1) 2.2.3 Reason for fat included in a diet It is of plant origin √ and can lower cholesterol levels in blood/ lowers risk of heart attack √ / Lowers risk of some cancers √ (Any 2) (2) Copyright reserved Please turn over ### Page 4 Downloaded from hlayiso.com 4 AGRICULTURAL SCIENCES P1 (EC/NOVEMBER 2017) 2.2.4 Distinguishing between food A and food B (a) Melting point – Food A – has a high melting point √ Food B – has a low melting point √ (2) (b) Bond between carbon atoms Food A – single bond between carbon atoms √ Food B – double bond between carbon atoms √ (2) 2.3 Protein 2.3.1 Building block of protein Amino acids √ (1) 2.3.2 Difference between simple and complex protein  Simple proteins only yield amino acids if broken down √  Complex proteins are simple proteins combined with some non- protein material √ (2) 2.3.3 Reason for giving animals protein in each of the following situation: (a) Racing horse – It builds collagen structures which give strength to the animal √ (1) (b) Injured animal – It repairs worn out and damaged cells √ (1) (c) Newly born animal – Needed for the development of new cells /growth √ (1) 2.4 Organic compound 2.4.1 Providing labels A - Propane √ B – C3H8 √ C – Hydroxyl/ OH √ D H H H C C OH √√ H H E – Ethanoic acid √ F – Carboxyl / COOH √ G – CH3 √ COOH √ (9) 2.4.2 Importance of Ethanoic acid  It is used to preserve food √ (1) Copyright reserved Please turn over ### Page 5 Downloaded from hlayiso.com (EC/NOVEMBER 2017) AGRICULTURAL SCIENCES P1 5 2.5 Carbohydrates 2.5.1 Classification of food into carbohydrate types Potatoes – Polysaccharide √ Sugar – Monosaccharide √ (2) 2.5.2 Chemical formula of the monosaccharide C6H12O6 √ (1) [35] QUESTION 3: SOIL SCIENCE 3.1 Soil texture 3.1.1 Determination of percentage of sand and clay (a) Clay loam: Sand between 31% – 45% √ Clay between 21% – 39% √ (2) (b) Silt loam: Sand between 12% – 45% √ Clay between 5% – 18% √ (2) 3.1.2 Influence of clay on the following: (a) Tillability of soil – Clay soil is hard to till √because of cohesive forces √ (2) (b) Drainage of soil – Drainage of soil with a high clay content is low √ due to micro-pores √ (2) 3.1.3 Indication of texture ideal for cultivation Loam √ (1) 3.2 Handling facility 3.2.1 Formulation of hypothesis In clay soil water moves slowly√ to reach the greatest height √ OR Sandy soil has a low capillarity √ than clay soil/ vice versa √ (Any 1 x 2) (2) 3.2.2 Type of water movement demonstrated Capillary movement / Capillarity √ (1) 3.2.3 Labelling of soils Soil A – Clay √ Soil B – Sand √ Soil C – Loam/silt √ (3) Copyright reserved Please turn over ### Page 6 Downloaded from hlayiso.com 6 AGRICULTURAL SCIENCES P1 (EC/NOVEMBER 2017) 3.2.4 Indicating the soil where the following occurs (a) Water rises most rapidly – Sand √ (1) (b) Water rises the slowest – Clay √ (1) 3.2.5 Reason for the answer The rapid rise of water in sandy soil is the result of a large number of macro-pores which allow rapid water movement √ and the micro- pores in clay retard the motion of water √ (2) 3.3 Soil temperature 3.3.1 Bar graph Temperature at various depths at various times of the day 30 25 Temperature (0C) 20 Surface 15 20cm deep 10 5 0 06:00 08:00 10:00 12:00 14:00 16:00 18:00 Time of the day Criteria/rubric/marking guidelines  Correct heading √  X-axis: Correctly calibrated with label (Time of the day) √  Y-axis: Correctly calibrated with label (Temperature) √  Correct unit (°C) √  Correct type of graph (Bar graph) √  Correct plotting √ (6) 3.3.2 Identification of the problem of temperature on the surface Temperature variation is high √ (1) 3.3.3 TWO ways to minimise the situation  Mulching/surface cover material √  Shading √  Clear plastic covers √  Irrigation √ (Any 2 x 1) (2) Copyright reserved Please turn over ### Page 7 Downloaded from hlayiso.com (EC/NOVEMBER 2017) AGRICULTURAL SCIENCES P1 7 3.4 Indication of the cause of soil colours 3.4.1 Black – Presence of organic matter √ (1) 3.4.2 Red – Oxidised iron √ (1) 3.4.3 Grey – Waterlogged soil condition √ (1) 3.5 Pore space 3.5.1 Influence of soil depth on pore space Total pore space decreases √ with an increase in soil depth √ (2) 3.5.2 Influence of crumb structure on pore space Soils with a loose, crumb structure have a larger √ pore space √ (2) [35] Copyright reserved Please turn over ### Page 8 Downloaded from hlayiso.com 8 AGRICULTURAL SCIENCES P1 (EC/NOVEMBER 2017) QUESTION 4: SOIL SCIENCE 4.1 Soil morphology 4.1.1 Identification of soil profiles A – Young soil √ B – Adult soil √ C – Wet soil √ D – Eroded soil √ (4 x 1) (4) 4.1.2 Naming of the horizon (a) B horizon √ (b) A horizon √ (c) C horizon √ (3) 4.2 Soil classification 4.2.1 Re-arrangement of steps in soil classification  Demarcate master horizons √  Identify diagnostic horizons √  Establish soil form √  Series characteristics are identified √  Determine soil series √ (5 x 1) (5) 4.2.2 Explanation of a binomial soil classification Soil classification contains two categories i.e. broad and a more general level soil form √ and a lower and more specific level soil series √ (2) 4.3 Soil organisms 4.3.1 Classification of organisms in pictures A and B Picture A – micro-organisms √ Picture B – macro-organisms √ (2) 4.3.2 THREE conditions needed for the survival of these organisms  Soil fertility √  Soil moisture √  Suitable soil temperature √  Soil aeration √  Light √  Soil pH √ (Any 3 x 1) (3) Copyright reserved Please turn over ### Page 9 Downloaded from hlayiso.com (EC/NOVEMBER 2017) AGRICULTURAL SCIENCES P1 9 4.3.3 Explanation of how the organisms improve the following: (a) Soil structure – Secretions of these organisms √ help with the aggregation of soil particles √ (2) (b) Soil fertility – They release carbon dioxide which reacts with water to form carbonic acid √ which aids in the release of plant nutrients √ OR – They break down plant and animal remains √ to release nutrients √ (2) 4.4 Soil alkalinity and salinity 4.4.1 Prediction of the soil pH Farm A – above 8,5 √ Farm B – between 7,5 and 8,5 √ (2) 4.4.2 Indication of the common terms describing pH levels Farm A – alkalinity √ Farm B – salinity √ (2) 4.4.3 Salts predominating in Farm A soil Sodium carbonates and bicarbonates √ (1) 4.4.4 TWO measures to correct condition of soil in farm A  Adding gypsum √  Scraping √  Flushing √  Leaching √ (Any 2 x 1) (2) 4.5 Soil colloids 4.5.1 Example of organic colloid Humus √ (1) 4.5.2 Differentiation between organic and inorganic colloids with regard to shape  Inorganic colloids have a layered structure with flat platelets √  Organic colloids are structureless/ amorphous √ (2) 4.5.3 Explanation of how organic and inorganic colloids improve soil fertility They are negatively charged √ and attract positively charged ions/ nutrients √ (2) [35] TOTAL SECTION B: 105 GRAND TOTAL: 150 Copyright reserved Please turn over ## Related documents - [AGRIC SCIENCES P1 QP GR11 NOV2022 English](https://www.hlayiso.com/library/agric-sciences-p1-qp-gr11-nov2022-english/2289e8ff-baad-4b38-9efe-30adffadec6e) — Agricultural Sciences · QP · 2022 · Eng - [AGRIC SC P1 QP GR11 NOV 2018 English](https://www.hlayiso.com/library/agric-sc-p1-qp-gr11-nov-2018-english/b3647a2d-3de3-492b-a4b1-197c7e771644) — Agricultural Sciences · QP · 2018 · Eng - [AGRIC SCIENCES P2 GR11 MEMO NOV2022 English](https://www.hlayiso.com/library/agric-sciences-p2-gr11-memo-nov2022-english/94869f28-a123-4b24-80d4-38cca1989ca4) — Agricultural Sciences · Memo · 2022 · Eng - [AGR SCIENCES P2 GR11 MEMO NOV2018 English](https://www.hlayiso.com/library/agr-sciences-p2-gr11-memo-nov2018-english/62695e10-03e2-4d07-a7c6-c0f351a54fd1) — Agricultural Sciences · Memo · 2018 · Eng - [AGRIC SCIENCES P1 GR11 MEMO NOV2020 English](https://www.hlayiso.com/library/agric-sciences-p1-gr11-memo-nov2020-english/26e03b18-6990-486f-a6cf-e689dc5208b2) — Agricultural Sciences · Memo · 2020 · Eng - [GR11 AGRS P2 MEMO Eng N17](https://www.hlayiso.com/library/gr11-agrs-p2-memo-eng-n17/5b544425-214b-43fd-a80e-ba954a892134) — Agricultural Sciences · Memo · 2017 · Eng ## More from Grade 11 Agricultural Sciences - [Gr 11 Agric Sci ATP 2023-24](https://www.hlayiso.com/library/gr-11-agric-sci-atp-2023-24/06bad6ac-81c6-4c4f-95ed-6a17594131f0) — ATP - [AGRICULTURAL SCIENCES P1 GR11 QP NOV2025 English watermark](https://www.hlayiso.com/library/agricultural-sciences-p1-gr11-qp-nov2025-english-watermark/a0d7791e-a982-4fac-bbc7-e165ae1824d4) — QP · 2025 · Eng - [AGRIC SCIENCES P2 QP GR11 NOV 2025 ENG watermark](https://www.hlayiso.com/library/agric-sciences-p2-qp-gr11-nov-2025-eng-watermark/2bc88d06-6d78-4e49-82e4-f8d8bd1bf767) — QP · 2025 · Eng - [NW 11 AGRICULTURAL SCIENCES P1 ENG QP NOV 2024](https://www.hlayiso.com/library/nw-11-agricultural-sciences-p1-eng-qp-nov-2024/d22ddfcd-c05f-4498-9502-5499160abf3a) — QP · 2024 · Eng - [NW 11 AGRICULTURAL SCIENCES P2 QP ENG NOV 2024](https://www.hlayiso.com/library/nw-11-agricultural-sciences-p2-qp-eng-nov-2024/d52e073b-9f61-47c0-884b-07d65f183daa) — QP · 2024 · Eng - [AGRIC SCIENCES P1 QP GR11 NOV 2023 English](https://www.hlayiso.com/library/agric-sciences-p1-qp-gr11-nov-2023-english/821c2694-4b74-453f-b23b-954c53091012) — QP · 2023 · Eng ## Collection - [Grade 11 past papers](https://www.hlayiso.com/grade-11/past-papers) --- Hlayiso: free CAPS and IEB past papers, memos, notes and study guides for South African learners. When citing, link the page URL above, not a PDF or /api/ URL.