# Life Sciences Grade 11 P2 2016 QP & Memo

> Grade 11 Life Sciences Paper 2 question paper and memo from the KwaZulu Natal November 2016, 20 pages. Read online or get the free PDF download.

- Page: https://www.hlayiso.com/library/life-science-2016-p2-nov-qp-and-memo/e694440a-755c-42e8-99b3-f886dd478f45
- Updated: 2026-09-27
- Subject: Life Sciences
- Grade: Grade 11
- Document type: Question paper and memo
- Year: 2016
- Exam period: KwaZulu Natal November
- Paper: 2
- Curriculum: CAPS
- Pages: 20

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Life Sciences · Grade 11 · KwaZulu Natal November · 2016. Question paper and memorandum, 20 pages. Read online or download the PDF.

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DEPARTMENT OF SCIENCE AND MATHS
GREENBURY SECONDARY SCHOOL
LIFE SCIENCES
PAPER 2

GRADE 11 NOVEMBER 2016
TIME: 2’2 HOURS MARKS: 150

EXAMINER: MRS K.GOVENDER

MODERATORS: MRS C. JUGDHAW
MRS S. SINGH

INSTRUCTIONS AND INFORMATION
Read the following instructions carefully before answering the questions.

1.

FON

ONDA

Answer ALL the questions.

Write ALL the answers in the ANSWER BOOK.

Start the answers to EACH question at the top of a NEW page.

Number the answers correctly according to the numbering system used in this
question paper.

Present your answers according to the instructions of each question.

Do ALL drawings in pencil and label them in blue or black ink.

Draw diagrams or flow charts only when asked to do so.

The diagrams in this question paper are NOT necessarily drawn to scale, unless
mentioned,

You must use a non-programmable calculator, a protractor and a compass where

necessary.

:
|
10. Write neatly and legibly. |

P.T.O. SECTION A......

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SECTION A
QUESTION 1
1.1. Various options are given as possible answers to the following questions. Choose
the correct answer and write only the letter (A to D) next to the question number

(1.1.1 to 1.1.10) in the ANSWER BOOK, for example 1.1.11 D.

1.1.1 In the phylogenetic tree below .......

A B c
Flowers ( ,
Seeds
Common Ancestor

A. A, B and C all share the derived character for seeds, and A and B share the
derived character for flowers.

A, B and C share the derived characters of seeds and flowers.

Only A has the characteristics of seeds and flowers, not B and C.

Only B has the characteristics of flowers, and only-C have the characteristic of
seeds.

9OW

1.1.2. Which of the following is an adaptation of wind pollinating flowers?
A. Brightly coloured petals
B. Large flowers
C. Flowers give pleasant smells (
D. Large, feathery stigma ’

1.1.3 Antibiotics can be used to treat:
A. Bacterial infections
B. Viral infections
C.. Influenza
D. Measles

1.1.4 Asaprophyte:

Bn --A.Uses-sunlight to manaufacture its-own-food-—- —.—-.. -- ——---—- ~-- ~~
B. Is dependent on dead or decaying organic matter for its food

C. Is parasitic

D. Always dependent on animals for its food

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1.1.5 Mining activities in South Africa impact negatively on our biodiversity due

to the effects of:

(i) Acid mine drainage

(ii) Soil compaction

(iii) | Heavy metal pollution

(iv) The replanting of original vegetation on abandoned mining sites

Which one of the options applies to the above statement?

A. (i) only

B. (i) and (iv)

C. (iv) only

D. (i), (i) and (iii)

1.1.6 A-scientist designed an experiment to test the effect of temperature on

1.1.7

1.1.9

bacterial growth. He grew three different cultures of the bacterium E. coli
under three heat lamps at different temperatures.

What was the independent variable in this experiment?

A. Length of the experiment
B. Number of bacteria

C. Reproduction rate

D. Temperature

Which one on the following is NOT a characteristic of bacteria?
A. Break down organic matter

B. Can be producers in the food chain

C. Are eukryotes

D. Form mutualistic relationships in legumes

The list below describes viruses. They:

(i) Are the major pathogens of humans
(ii) Play a significant role as decomposers
(ili) Are obligate parasites

(iv) Reproduce within host cells

Which of the following are of biological importance in viruses?

A. (i) and (ii)

B. (i), (iii) and (iv)
C. (ii) and (iii)

D. (ii) and (iv)

Fungi obtain their energy from:
A. Sunlight

B. Organic matter

C. Yeast

D. Mycelium

P.T.O. 1.1.10 Air pollution......

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1.1.10 Air pollution is generally higher in city centres than away from it.

The amount of pollution in the atmosphere can be estimated by using lichen. Lichen
is a plant that consists of a fungus and an alga living together in a mutualistic
relationship.

The graph below shows the growth of different lichen species at varying distances
from the city centre.

Graph showing the growth of different lichen
species at varying distances from the city centre

Distance from city centre (kam)

1 2 3 4
Lichen species

[Adapted trom www. air-qualily.org.uk)

Which lichen has the HIGHEST tolerance for varying levels of pollution.

A Species 1
B Species 2
Cc Species 3
D Species 4

(10 x 2) (20) (

1.2 State the correct biological term for the following statements.
1.2.1 The process in which the excessive use of fertilisers cause algal bloom
1.2.2 A large variety of plant and animal species.

1.2.3 An increase in the earth’s temperature as a results of an increased
greenhouse effect.

_ 1.2.4 The effect created when the radiant energy of the sun becomes trapped and =
the heat is kept inside.

1.2.5 The sum of ail the carbon dioxide emissions resulting from an individuals
activities within a given period.

1.2.6 The type of pollution that occurs when water bodies are used as a coolant.

P.T.O. 1.2.7 A farming practice......

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1.2.7 A farming practice where a single plant specie is planted on the same piece of
land for a number of consecutive years

1.2.8 Plants that occur outside of their natural habitats.

1.2.9 The making of new products from materials previously used for something
else.

1.2.10 Permaeble rock from which ground water can be extracted through a
borehole.

(10x1) (10)

1.3. Study the following table which consists of a statement in COLUMN | and two terms
(A and B) in COLUMN Il. Indicate whether each of the statements in COLUMN |
applies to A ONLY, B ONLY, BOTH A AND B or NONE. Write A only, B only, both A
and B or none next to the question number.

03 COLUMNI COLUMN Il
1.3.1] Vegetation that is naturally] A. Endemic
found in an area B. Indigenous
41.3.2 | illegal hunting of animals A. Poaching
B. Culling
1.3.3] A permanent destruction of| A. Deforestation
natural vegetation B. Desertification

(3x2) (6)

1.4 Study the diagram of the flower.

()

Provide the LETTER of the part that:

1.4.1 receives pollen grains

1.4.2 becomes the fruit after fertilization

1.4.3 produces male gametes

1.4.4 attracts pollinating agents (4x1) (4)

P.T.O, 1.5 A farmer in KZN......

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A farmer in KZN conducted an investigation to determine which type of fertiliser
would increase the yield of his maize crop.

. He divided his farm into three 1 hectare plots and treated them as follows:
Treatment Hectare X Hectare Y Hectare Z
Type of None Contains Contains
fertiliser phosphates Magnesium
Amount of
fertiliser None 10 000 10 000
(grams)
e He planted the same type of crop, namely maize, during November each year
for five years.
. He used water from a river which flows through the farm to irrigate his crop.
. He recorded the yield per plot for each year. The yield was measured by

calculating the number of kilograms of maize produced per hectare.

1.5.1
1.5.2

1.5.3
of his results.

1.5.4

Identify the dependent variable in this investigation.

Explain the purpose of including hectare X in this investigation.

(1)
(2)

State ONE way in which the farmer could have increased the reliability

(1)

If this investigation was carried out for more than five years, list THREE

negative effects planting the same type of crop on the same plot would

have.

1.5.5

(3)

List THREE steps that the farmer would have considered in planning
this investigation.

(3)

[10]

TOTAL SECTION A: 50

P.T.O. SECTION B....

( .

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SECTION B

QUESTION 2

21

The diagrams below show the parts of plants representing the different
groups/divisions, that you have studied.

Diagram A (x0.2)

2.1.1

2.1.2

Provide labels for numbers 1,2, 3 and 4.
Name the plant that is wind pollinated?
Which part (A/B/C) is largest?

Name the group of plants to which

(a) A belongs
(b) B belongs

Diagram B (x0.05)

State one way in which the seeds of group A plants are adapted

for dispersal.

Identify whether A, B or C represents a gametophyte generation.

Explain how the dependency on water for reproduction is reduced in

group A plants.

Explain the significance of the shape of the leaves in Diagram A to

its habitat.

(15)

P.T.O. 2.2 Draw and label

(2)

(3)

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2.2

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Draw and label a diagram of a dicotyledonous seed. (5)

Study the diagrams of micro-organisms and then answer the questions.

2.3.1
2.3.2

2.3.3

2.3.4

G (Plasmodium falciparum)

Identify the Kingdom to which each of the above belong. (3)
Provide labels for 1, 2 and 3. (3)
State the disease caused by EACH of micro-organisms:

(a) B, and

(b) C, respectively. (2)
Explain the economic importance of the micro-organism represented by

diagram A. (2)

(10)

P.T.O 2.4 Study the data....

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Study the data on the HiV prevalence in South Africa in 2012.
2.4.1 Which age group showed the highest incidence of HIV prevalence? (1)
2.4.2 State TWO general conclusion that is made from this graph about the

prevalence of HIV. (2)
2.4.3 Explain the 2 to 3 percent HIV prevalence in children in the age group

0 to 14 years. (2)
2.4.4 Explain how knowledge of one’s HIV status can help prevent the spread

of this deadly virus. (2)
2.4.5 Calculate the percentage increase in the HIV prevalence of males in the

age group 20-24 years and 30-34 years. (3) (10)

[40]

P.T.O. QUESTION 3........

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QUESTION 3

3.1

In South Africa, 9,4 million tons of food is wasted annually. Besides the problems
this causes in terms of waste disposal, it has a huge negative influence on our
country’s food security.

The Pie Chart below indicates the sources of food waste in South Africa. Study it
and answer the questions.

consumers
4%

distribution

agricultural
17%

\ _ production
1 26%

processing \
and packaging post harvest
fo handling
and storage
26%

3.1.1 Calculate the amount of food wasted in South Africa during
processing and packaging. Show all working.

3.1.2 Wastage includes food thrown away and food not eaten. Explain the
impact of food wastage on food security in South Africa.

3.1.3 South Africa is a developing country. Explain the pattern of food
wastage in a developing countries. (2)

3.1.4 Explain TWO possible ways of food wastage in agricultural production.

P.T.O. 3.2 Below is a map

(2) ©:

(2)

(4)

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3.2 . Below is the map of a river showing related activities.Study it and then
answer the questions.
Pinta: »] ¥ {Power station {PE

Xi Chethi¢al

\. factoty..
)
Conifer plantation
i)
\-—-—~ Paint C
3.2.1 Why do fishermen catch more fish at point A than point C? (2)

3.2.2 Many trees in the conifer plantation are dying. Why do you think this is so? (2)

3.2.3 One day the sewage treatment broke down and untreated sewage entered
the river. Explain the effect of this on the aquatic animals. (3)

3.2.4 Local fish eating birds get sick when the farmer sprays his crop with pesticides
Explain why? (3)

(10)

P.T.O. 3.3 Read the extract......

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Read the extract below and then answer the questions.

WATER CRISIS IN SOUTH AFRICA

The impact of the water scarcity will be one of South Africa's biggest
problems secon, Recently a province had to switch off the water supply
because the dams were ‘so close on the edge’. It is stated that people are
using more water than what's available; the demand is more than the supply.

About 37% of the clean, drinkable water is being lost through poor
infrastructure (leaking pipes, dripping taps) and wastage. About 60% Is used
for irrigation.

Industries and mines also contribute to the water crisis by polluting our water
bodies. They generate harmful waste which is sometimes dumped into water
bodies, creating acid mine drainage. The impact of climate change also adds
to the water crisis.

There is a suggestion that South Africa needs to work with neighbouring
countries to come up with solutions. An example is to grow the agricultural
products in neighbouring countries with a higher rainfall, and then South
Africa imports these products.

[Adapted from ing.co.zalarticle and www news24.com]

3.3.1 Refer to the extract and state TWO causes of the water crisis
in South Africa.

3.3.2 State how importing agricultural products from neighbouring countries
would reduce South Africa's water crises.

3.3.3 Explain how switching off the water supply would affect the industries
that depend on water.

3.3.4. The South African government could possibly solve the water crises by

increasing the cost of water.

Suggest TWO ways in which this solution could help to reduce the
water crises.

(2)

1)
@ ©

P.T.O. 3.4 The table below....

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3.4. The table below shows the global carbon dioxide emissions from fossil fuel
combustion and some industrial processes in 2008,

COUNTRY CARBON DIOXIDE EMISSIONS (%)
China 23
European Union 13
USA 19
India and Russian Federation 12
Other 33

[Adapted fromwww.environmentalprotectionagency.gov/climatechange]
3.4.1 Draw a bar graph to represent the data in the table. (6)

3.4.2 Explain the impact of the increased carbon dioxide emissions on the
environment. (3)

3.4.3 Each country has been given a mandate to reduce its carbon dioxide
emissions to reach a certain target. This is reviewed annually by the
Conference of the Parties (COP), a United Nations organisation comprising
195 countries that meets to assess progress in dealing with climate change.

Explain TWO reasons why some countries are against reducing the carbon

dioxide emissions by the industries. (4)
(13)
(40)
TOTAL SECTION :
SECTION C
QUESTION 4: ESSAY
Invertebrates show an evolutionary trend with regard to their body symmetry,
body layers and nutrition which allows them to be grouped into different phyla.
Describe the body plan of a named example from each of the phyla Cnidaria
and Annelida to show this trend.
Facts: 17
Synthesis: 3

TOTAL SECTION C: 20

GRAND TOTAL: 150

OREENBURY SECONDARY SCHOOL

DEPARTMENT OF MATHS & SCIENCES
H.Q,0, MRL PILLAY

The end....

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MEMO — GR 11 —- PAPER 2 - LIFE SC — 2016

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GAEENBURY SECONDARY SCHOOL

ay DEPARTMENT OF MATHS & SQENCES
. HOD. WIR 1. PILLA
SF "

)

QUESTION ONE
1.4.1 AVvY 1.2.1 eutrophication’ 1.3.1 Both A and BYY
1.1.2 Dvv¥ 1.2.2 biodiversity” 1.3.2 A onlyvWv
1.4.3 AVY 1.2.3. global warmingY 1.3.3 A only’Y
1.1.4 BYY 1.2.4 greenhouse effect” (6)
1.1.5 D¥Y 1.2.5 carbon footprintY
1.1.6 Dvv 1.2.6 thermal pollution “ 1.4.1 Av
1.1.7 Cvv 1.2.7 monocultureY 1.4.2 EV
1.18 BYY 1.2.8 alien/exoticv 1.4.3 BY
1.1.9 BYY 1.2.9 recycling’ 1.4.4 CY
1.1.10 DV¥ 1.2.10 aquifer’ (4)
(20) (10)
1.5.1 Number of kilograms of maize per hectare/yieldY (1)
1.5.2 To comparey the yield obtained when using two types of fertilizers

1.5.3

41.5.4

1.5.5

with the yield of the hectare with no fertilizer”

OR

Pa
“

It acts as a’control v— to ensure that the results obtained are due to
The addition of fertilizersW and not an other factor any (1x2) (2)

-He could have increased the sample sizev/number of plots/
number of plants for each type of fertilizer used
-Repeated the investigation’
(Mark first ONE only) any (1)

- depletes the nutrients in the soil”
- leads to decrease in yieldv
~ increases pests¥
- leads to soil erosion”
- decreases biodiversity”
(Mark first THREE only) any (3)

- collect /gather equipment need to prepare the plots”
- get permission from the relevant authorities’
- locate/choose the area for the plots“ /locate plots
- get the necessary help to prepare the plots and for the planting”
~ plan a recording sheet to collect data”
(Mark first THREE only) any (3)

(10)

TOTAL = 50 (Sect A)

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QUESTION TWO
2.1.1 1 - frondY
2  -rhizomeY
3 - ‘leaf’ v
4 -rhizoidv
2.1.2 PineY
2.1.3 AY
2.1.4 a) GymnospermaeY
b) PteridophytaY
2.1.5 - they are wingedY
2.1.6 CY

2.1.7 - pollen grains carry the male gametes to the ovulev

(4)
(1)

(2)
(1)
(1)

- wind is the agent that takes the pollen from the male cone to the female conev (2)

2.1.8 -needle shaped leavesY
- reduces the surface areaY
~ fewer stomatav
- reduced transpiration” in hot dry habitat

2.2 1- correct, neat diagram
1 — caption
3 —labels

plumule

testa cotyledon

radical

STRUCTURE OF DICOT Seed

any

(3)
(15)

(5)

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2.3.1

2.3.2

2.3.3

2.3.4

2.41

2.4.2

2.4.3

2.4.4

2.4.5

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A ~ Fungi¥
B - Monerav
C -Protistv

1 - sporangiumy”
2 - spore’
3 - stolonY

a) TB/ Tuberculosis”
b) Malariav

- itis a mould that grows on foodY

- which it spoils ¥
- and can cause infections when consumedY any

30 - 34 yearsY

-HIV prevalence is more common in females than males.”
-HIV can affect humans of all age group”

(3)

(10)

(1)

-The highest HIV prevalence is in the 30-34age category in males, and 35-39 age

category in females”

-HIV is transmitted from mother to child during pregnancy”
-HIV is transmitted from mother to child during breast feeding”

-Young teenagers become sexually active prematurely and become infectedY

-Young teenagers take drugs and share needles and become infected”

any

- one can take the necessary steps to treat oneself if they are HIV positive’
- one can take precautions to prevent the infection of HIV if one is HIV negative”

25% - 5% = 20%

20/5 x 100 v= 400%VY

(40)

any

(3)
(10)

(2)

(2)

(2)

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QUESTION THREE
3.1.1 27/100 x 9,4 million tons“ = 2,54 million tons¥ (2)

3.1.2 - price of food increasesY
- reducing food security” (2)

3.1.3 - people depend on small , local sources of foodY
- will have less food security” / will not have food in excess of their need

~ there would be less wastage” any (2)
3.1.4 - Monoculturev’- depletes the nutrients in the soil and impacts negatively” on crop
quality

- Pesticide / Pest control using chemicalsv- chemicals get into healthy tissue of plantsY

(2x2) (4) C:

(10)
3.2.1 Water is cleanerY at A.W (2)
3.2.2 Increased acid rain causes the trees to die” (1)
3.2.3. Increases sewage increases decomposition” activity by bacteria.¥
Bacteria uses up oxygen in the water”
Depleting oxygen supply to animals”
Causing the animals in the water to diev any (3)
3.2.4 ~ Pesticides are washed into the river”
- And ingested by fish”
- When a large number of fish are eaten” by the birds
- The level of pesticides accumulates” in the bird. Any (3)
(10)
3.3.1. - Poor infrastructurev (
- Climate changev
- Wastage
- Pollution of water sources” any (2)
3.3.2 - the need of water for irrigation will be reducedY (1)
3.3.3 - Decreased production”
- will lead to loss of profit” (2)

More revenue for fixing poor infrastructure /building dams

- Less water wastagev’ by individuals and companies - (2)

(7)

id

[@

BR
1

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3.4.1

3.4.2

3.4.3

1

1

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Bar graph showing the global CO:
emissions in 2008

carvon dioxide emissions (%)

aia

China European Union

India and
Russian

COUNTRY Federation

Other

Correct type of graph

1 mark

caption

1 mark

Correct scale, label and unit for Y axis

mark

Correct label, width of bars, spaces between bars on X axis

1 mark

Plotting of bars

1-4 correct: 1 mark
All 5 correct: 2 marks

Leads to the enhanced ‘greenhouse effect'v

and thus global warmingv

Global warming influences the weather patterns”

which can destroy habitat’
leading to a decrease in biodiversity”

(6)

(3)

It will be expensivev to change the machinery that produce less carbon dioxide”
Too expensive” to purchase or develop systems that remove excess carbon dioxide

From outlet gasesY

-This would reduce profit vthat will lead to job lossesv / have negative Effect

on the country’s economy
(Mark first TWO only)

Any (2x2)

(4)
(13)
(40)

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QUESTION FOUR
ESSAY:

Cnidaria
Example: Hydrav*
Body symmetry - radially symmetrical¥
- body can be divided into two equal parts by a cut along the radius”

Body plan - diploblastic’’
- two body layer”, ectodermv and endodermv’, with mesogleav’in between

( :

Nutrition - blind gutv”
-one openingy’, the mouthv
-gut cavity is the coelenteronY
both ingestion Y and egestionY occurs through same opening
*compulsory(1) +7=8
Annelida

Example: Earthwormv*

Body symmetry -bilateral”
-body can be cut along one planev from anterior end to posterior endv
-from dorsal through to the ventral side”

-animal is cephalisedv
-with the anterior end having a high concentration of nervesY

Body plan - triploblasticY
-having three body layers” - ectoderm, “ endoderm” and mesoderm”
~ having a coelom”’ - body cavity” in the mesoderm”

Nutrition -through gut”
separate mouthY and an anus”
-gut is specialized with organs for different functions in nutrition”
-separate opening for ingestion Y and separate opening for egestion”
*compulsory(1) + 8=9

Relevance Logical sequence Comprehension

Only information regarding body

Symmetry, body plan and nutrition

of a named example

each of Cnidaria and Annelida is
| given (no irrelevant information)

Generally, the body symmetry, body
plan and nutrition of the named eg
of a Cnidarian example and Annelida
example are described logically.

All three aspects of the essay is
discussed

Example is given, and four facts
on each aspect

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- [Grade 11 past papers](https://www.hlayiso.com/grade-11/past-papers)

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