GRADE 11 NOVEMBER 2012 AGRICULTURAL SCIENCES P1
Province of the
EASTERN CAPE
EDUCATION
NATIONAL SENIOR CERTIFICATE
GRADE 11
NOVEMBER 2012
AGRICULTURAL SCIENCES P1
MARKS: 150
TIME:
2? hours
*AGRSE1* This question paper consists of 17 pages, including an answer sheet.
2
AGRICULTURAL SCIENCES P1
(NOVEMBER 2012)
INSTRUCTIONS AND INFORMATION
1. Answer ALL the questions from BOTH SECTIONS A and B.
2. SECTION A (QUESTION 1) must be answered on the attached ANSWER SHEET.
3. Place your ANSWER SHEET for SECTION A (QUESTION 1) within your ANSWER BOOK.
4. SECTION B (QUESTIONS 2 to 4) must be answered in the ANSWER BOOK.
5. Start each question from SECTION B on a NEW page.
6. Read the questions carefully and make sure you answer what is asked.
7. Number the answers correctly according to the numbering system used in this question paper.
8. DO NOT SPLIT the answers to the questions.
9. Write neatly and legibly.
(NOVEMBER 2012)
AGRICULTURAL SCIENCES P1
3
SECTION A
QUESTION 1
1.1 Various options are provided as possible answers to the following questions. Choose the correct answer and make a cross (X) over the appropriate letter in the block (A ? D) next to the question number (1.1.1 ? 1.1.10) on the attached ANSWER SHEET. No marks will be allocated if more than one cross (X) appears for an answer.
Example: 1.1.11 A
B
C
D
1.1.1 The pH value of pure water is ...
A 7,0. B 7,5. C 6,5. D 5,0.
1.1.2 The formula for the organic compound below is ...
1.1.3
CH2OH
C
H
H
C
OH
OH C
H
O H
C H
OH C
OH
A
C5H10O5.
B
C12H22H11.
C
C6H10O5.
D
C6H12O6.
When soil is watered, bubbles escape from soil mainly because of the ...
A mixture of gases. B hydrogen. C carbon dioxide. D oxygen in the soil.
4
AGRICULTURAL SCIENCES P1
(NOVEMBER 2012)
1.1.4 The diameter of a colloidal particle varies between ...
A 10 and 100 nm. B 10 and 1 000 nm. C 1 and 10 nm. D 1 000 and 10 000 nm.
1.1.5 The combination of A-horizon over C-horizon represents a/an ...
A adult soil. B young soil. C eroded soil. D wet soil.
1.1.6 1.1.7 1.1.8
Which of the following is the correct statement referring to the characteristics of all polypeptides?
A Polypeptides are also fatty acids B Polypeptides are also known as amino acids if they are linked
with glycosidic bonds C The amino acids in the polypeptide will be connected by
peptide bonds D Each amino acid in the polypeptide will possess an amino
and a hydroxyl group
The type of clay mineral which is inclined to form a platy structure is ...
A montmorillonite. B kaolinite. C illite. D vermiculite.
In the following illustration of water molecule, one of the answers below is the correct order for the parts labelled K to N.
- + L - +K M
- + N
- +
K
L
M
N
A
oxygen
hydrogen
cohesion
hydrogen
B
hydrogen
oxygen
adhesion
oxygen
C
oxygen
hydrogen hydrogen bond oxygen
D
hydrogen
oxygen hydrogen bond oxygen
(NOVEMBER 2012)
AGRICULTURAL SCIENCES P1
5
1.1.9 Black brack soil contains an excess of ...
A sodium carbonate. B sodium chloride. C sodium sulphate. D potassium chloride.
1.1.10 One of the following diagrams represents a sweet soil:
K
L
M
A M B K and M C K D L
(10x2) (20)
1.2 In the table below, a statement and two answers are given. Decide whether the statement in COLUMN B relates to A only, B only, both A and B or none of the answers in COLUMN A. Choose the correct answer and make a cross (X) in the appropriate block next to the question number (1.2.1 ? 1.2.5) on the attached ANSWER SHEET.
Example:
COLUMN A
1.2.6
A: B:
Vitamins Fats
COLUMN B Organic compounds
Answer:
The statement refers to:
1.2.6
Only A A
Only B B
A and B C
None D
1.2.1 A: B:
1.2.2 A: B:
1.2.3 A: B:
1.2.4 A: B:
1.2.5 A: B:
COLUMN A Cellulose Lignin O-horizon A-horizon Series photograph Aerial photograph Soil moisture Soil air Wilting point Field capacity
COLUMN B Disaccharides formed from monosaccharaides
Form top soil of the upper surface
Soil map that is used during soil survey
Influences soil temperature for optimum crop production When all the soil pores are filled with air and soil is dry
(5x2) (10)
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