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.
3
AGRICULTURAL SCIENCES P1
(NOVEMBER 2012)
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 ¨C D) next to the question number
(1.1.1 ¨C 1.1.10) on the attached ANSWER SHEET. No marks will be
allocated if more than one cross (X) appears for an answer.
Example:
1.1.1
A
B
C
D
The pH value of pure water is ¡
A
B
C
D
1.1.2
1.1.11
7,0.
7,5.
6,5.
5,0.
The formula for the organic compound below is ¡
CH2OH
C
H
OH
1.1.3
H
H
C
A
B
C
D
O
C
OH
H
C
C
H
OH
OH
C5H10O5.
C12H22H11.
C6H10O5.
C6H12O6.
When soil is watered, bubbles escape from soil mainly because of
the ...
A
B
C
D
mixture of gases.
hydrogen.
carbon dioxide.
oxygen in the soil.
4
AGRICULTURAL SCIENCES P1
1.1.4
The diameter of a colloidal particle varies between ¡
A
B
C
D
1.1.5
C
D
Polypeptides are also fatty acids
Polypeptides are also known as amino acids if they are linked
with glycosidic bonds
The amino acids in the polypeptide will be connected by
peptide bonds
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
B
C
D
1.1.8
adult soil.
young soil.
eroded soil.
wet soil.
Which of the following is the correct statement referring to the
characteristics of all polypeptides?
A
B
1.1.7
10 and 100 nm.
10 and 1 000 nm.
1 and 10 nm.
1 000 and 10 000 nm.
The combination of A-horizon over C-horizon represents a/an ¡
A
B
C
D
1.1.6
(NOVEMBER 2012)
montmorillonite.
kaolinite.
illite.
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
- +
A
B
C
D
K
oxygen
hydrogen
oxygen
hydrogen
L
hydrogen
oxygen
hydrogen
oxygen
M
cohesion
adhesion
hydrogen bond
hydrogen bond
N
hydrogen
oxygen
oxygen
oxygen
Black brack soil contains an excess of ¡
1.1.9
A
B
C
D
1.1.10
sodium carbonate.
sodium chloride.
sodium sulphate.
potassium chloride.
One of the following diagrams represents a sweet soil:
K
A
B
C
D
1.2
5
AGRICULTURAL SCIENCES P1
(NOVEMBER 2012)
L
M
M
K and M
K
L
(10x2) (20)
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 ¨C 1.2.5) on the
attached ANSWER SHEET.
Example:
1.2.6
Answer:
A:
B:
COLUMN A
Vitamins
Fats
The statement refers to:
Only A
Only B
1.2.6
A
B
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
COLUMN A
Cellulose
Lignin
O-horizon
A-horizon
Series photograph
Aerial photograph
Soil moisture
Soil air
Wilting point
Field capacity
COLUMN B
Organic compounds
A and B
C
None
D
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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