LIFE SCIENCES GRADE 11 MARCH 2020 TOTAL: 50 - TIME: 50 minutes - MOTHEO DISTRICT - Grey College
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MOTHEO DISTRICT
GRADE 11
LIFE SCIENCES
MARCH 2020
TOTAL: 50
TIME: 50 minutes
This question paper consists of 7 pages.
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Life Sciences Test 2.1 2 March/Motheo District 2020
Gr11
INSTRUCTIONS AND INFORMATION
Read the following instructions carefully before answering the questions.
1. Answer ALL the questions.
2. Write ALL the answers in the ANSWER BOOK.
3. Start the answers to EACH question at the top of a NEW page.
4. Number the answers correctly according to the numbering system used in this
question paper.
5. Present your answers according to the instructions of each question.
6. Make ALL drawings in pencil and label them in blue or black ink.
7. Draw diagrams, tables or flow charts only when asked to do so.
8. The diagrams in this question paper are NOT necessarily drawn to scale.
9. Do NOT use graph paper.
10. You must use a non-programmable calculator, protractor and a compass,
where necessary.
11. Write neatly and legibly.
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Life Sciences Test 2.1 3 March/Motheo District 2020
Gr11
SECTION A
QUESTION 1
1.1 Various options are given as possible answers to the following questions. Choose
the answer and write only the letter (A to D) next to the question number (1.1.1 to
1.1.5) in the ANSWER BOOK, for example 1.1.6 D.
1.1.1 What is the type of immunity that develops as a result of a vaccine?
A Acquired and passive
B Acquired and active
C Natural and passive
D Natural and active
1.1.2 E.Coli in the human intestines is an example of …
A parasitism
B symbiosis
C commensalism
D competition
1.1.3 Plant division which includes mosses, liverworts and hornworts.
A Angiosperms
B Pteridophytes
C Bryophytes
D Gymnosperms
1.1.4 An interaction where both organisms in the relationship benefit.
A Commensalism
B Symbiosis
C Mutualism
D Parasitism
1.1.5 The name given to a plant body where true roots, stem and leaves
cannot be distinguished.
A Thallus
B Non-thallus
C Prothallus
D Rhizome
(5 x 2) (10)
Copyright reserved Please turn overLife Sciences Test 2.1 4 March/Motheo District 2020
Gr11
1.2 Give the correct biological term for each of the following descriptions. Write
only the term next to the question number (1.2.1 to 1.2.4) in the ANSWER
BOOK.
1.2.1 Administration of a vaccine by means of an injection or orally to bring
about immunity to a disease
1.2.2 Seed bearing plants with flowers
1.2.3 The way in which a plant/animal protects itself from pathogenic
viruses, bacteria, protozoa and fungi.
1.2.4 The type of reproduction that result in genetically identical offspring.
(4x1) (4)
1.3 Indicate whether each of the descriptions in COLUMN I applies to A ONLY, B
ONLY, BOTH A AND B or NONE of the items in COLUMN II. Write A only, B
only, both A and B or none next to the question number (1.3.1 to 1.3.3) in
the ANSWER BOOK.
COLUMN I COLUMN II
1.3.1 Nitrogen fixing organism A: Virus
B: Bacteria
1.3.2 The body’s response to the presence A: Immunity
of disease-causing organism before it B: Vaccination
has a chance to cause an illness
1.3.3 An interaction in which two organisms A: Competition
of different species live together in B: Symbiosis (6)
direct contact
(3 x 2)
TOTAL SECTION A: 20
Copyright reserved Please turn overLife Sciences Test 2.1 5 March/Motheo District 2020
Gr11
SECTION B
QUESTION 2
2.1 The diagrams below show the structures of two flowers.
FLOWER A
FLOWER B
2.1.1 Define pollination. (1)
2.1.2 Name the pollination agents of:
(a) Flower A (1)
(b) Flower B (1)
(3)
Copyright reserved Please turn overLife Sciences Test 2.1 6 March/Motheo District 2020
Gr11
2.2 The diagram below shows different plant groups.
Plant groups
2.2.1 Identify plant group 2 and 3 respectively.
(2)
2.2.2 Give labels to A and B respectively. (2)
2.2.3 Plants are classified into different groups according to certain
characteristics. Describe the characteristics for plant group 2 with
relation to ...
(a) vascular tissue (1)
(b) fertilisation (1)
(c) fruit (1)
2.2.4 The ovules in flower 1 develop into seeds after fertilisation. List TWO (2)
significances of seeds.
2.2.5 Tabulate ONE difference between reproductive structures of (3)
Gymnosperms and Angiosperms. (12)
TOTAL QUESTION 2: [15]
Copyright reserved Please turn overLife Sciences Test 2.1 7 March/Motheo District 2020
Gr11
QUESTION 3
3.1 A learner investigated the number of bacteria on the skin of people’s hands
after they washed and dried them. The same washing method was employed,
but hands were dried either by using hot air from a hot air blower or by using
paper towels. Swabs were used to take samples from the dried skin and
bacteria that was cultured. Study the table and answer the questions that follow.
Amount of bacteria (×108) / cm2 on the skin of the hands after drying them with
a paper towel and hot air.
Amount of bacteria (×108) / cm2
Sample
Skin dried with hot air Skin dried with paper towels
1 8,91 1,11
2 9,75 0,98
3 6,14 0,42
4 8,72 1,02
3.1.1 What was the aim of this investigation? (1)
3.1.2 State the:
(a) Dependant variable. (1)
(b) Independent variable. (1)
3.1.3 Using the information, draw a bar graph to show the amount of bacteria (5)
on four different skin samples after it was dried with a paper towel.
3.1.4 What is meant by antibiotic resistance? (2)
(10)
3.2 Explain the main disadvantage of each of the following:
3.2.1 sexual reproduction (3)
3.2.2 Asexual reproduction (2)
(5)
TOTAL QUESTION 3: [15]
TOTAL SECTION B: 30
GRAND TOTAL: 50
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