TOPIC TEST
EVOLUTION 1
GRADE 12
LIFE SCIENCES
30 JULY 2024
MARKS: 45
TIME: 48 MINUTES
This question paper consists of 7 pages.
Copyright Reserved
Life Sciences/Evolution Test 1 NW NW / JULY 2024
INSTRUCTIONS AND INFORMATION
1. Answer ALL the questions.
2. Write ALL the answers in your ANSWER BOOK.
3. Start the answer 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. Do ALL drawings in pencil and label them in blue or black ink.
7. Draw diagrams, tablets or flow charts only when asked to do so.
8. The diagrams in this question paper are NOT necessarily all drawn to scale.
9. Do NOT use graph paper.
10. You must use a non-programmable calculator, protractor and compass where
necessary.
11. Write neatly and legibly
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Life Sciences/Evolution Test 1 NW NW / JULY 2024
SECTION A
QUESTION 1
1.1 Various options are provided as possible answers to the following questions. Choose the
answer and write only the letter (A - D) next to the question numbers (1.1.1 to 1.1.9) in
the ANSWER BOOK, e.g. 1.1.10 D
1.1.1 A scientific idea that still need to be tested is referred to as a ….
A theory
B hypotheses
C fact
D belief
1.1.2 Which ONE of the following indicates the type of variation for each of
human characteristics?
Height Skin colour Ear lobe type
A Discontinuous Continuous Discontinuous
B Continuous Continuous Discontinuous
C Discontinuous Discontinuous Continuous
D Discontinuous Continuous Continuous
1.1.3 The following are characteristics of a group of animals:
(i) Able to interbreed
(ii) Occupy the same habitat
(iii) Produce infertile offspring
(iv) Belong to same species
Which combination CORRECTLY represent a population?
A (i),(ii),(iii) and (iv)
B Only (i),(ii) and (iv)
C Only (i),(ii) and (iii)
D Only (i) and(iv)
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Life Sciences/Evolution Test 1 NW NW / JULY 2024
1.1.4 The present day distribution of organisms is referred to as ….?
A biodiversity
B biology
C biochemistry
D biogeography
1.1.5 Which one of the following can be used as evidence to support common
ancestry?
A Different DNA sequencing in different species.
B Geographic distribution of different phyla.
C Homologous structures of a whale’s flipper and a bat wing
D Analogous structure of bird’s wing and insect’s wing
1.1.6 The table below shows the percentage similarity of DNA of different primates
ORGANISM DNA SIMILARITY(%)
Human 100
Capuchin monkey 84.2
Vervet monkey 90.5
Rhesus monkey 91.1
Gibbon 94.7
Chimpanzee 97.6
Which of the following pairs of primates are most closely related to human?
A Gibbon and chimpanzee
B Gibbon and Rhesus monkey
C Rhesus Monkey and Vervet monkey
D Capuchin monkey and vervet monkey
1.1.7 Lamarck ‘s laws of use and disuse and inheritance of acquired characteristics
were…
A Rejected, because only characteristics that benefit offspring
can be inheritance
B Not rejected, because evidence shows that acquired
characteristics can be inherited
C Rejected , because only characteristics that are coded for in
the DNA can be inherited
D Not rejected, because Darwin’s theory supports Larmack’s
idea
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Life Sciences/Evolution Test 1 NW NW / JULY 2024
1.1.8. Study the list below
1 Fossil
2 Homologous chromosomes
3 Biology
4 Genetics
Which ONE of the combinations of the above can be used as evidence for
evolution
A 1,2 and 3 only
B 1,2,3 and 4
C 1 and 4 only
D 1,3 and 4 only
(8 x 2) (16)
1.2 Give the correct biological term for each of the following descriptions.
Write only the term next to the question numbers (1.2.1 to 1.2.9) in the
ANSWER BOOK.
1.2.1 The process of change in the characteristics of biological
species over time.
1.2.2 Similar structures that are inherited from a common ancestor and are
modified for different function.
1.2.3 Explanation that that species experience long periods without physical
change, followed by short periods of rapids physical change
1.2.4 Study of fossils
(4 x 1) (4)
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1.3 Indicate whether each of the statements in COLUMN I apply 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 numbers (1.3.1 to 1.3.3) in
the answer book.
COLUMN I COLUMN II
1.3.1 Source of variation in a A: Random mating
species B: Random arrangement of
chromosomes
1.3.2 Organism have A: Lamarck
inherent/internal drive to B: Darwin
change
1.3.3 A branched diagram A: Pedigree diagram
showing the evolutionary B: Phylogenetic tree
relationship between
species
(3 x 2) (6)
1.4 The present-day distribution of three closely related species of dog family, the
coyote, jackal and dingo, is shown on the world map below.
1.4.1 What type of evidence for evolution is represented in the diagram above? (1)
1.4.2 Give a reason for your answer in QUESTION 1.4.1. (2)
1.4.3 Define the term population. (3)
1.4.4 Describe how these three species could have evolved from a common
ancestor (7)
1.5
1.5.1 State and explain the TWO Laws used by Lamarck (4)
1.5.2 Give reason why Lamarck theory was rejected (2)
(19)
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SECTION B
QUESTION 2
2.1. Study the basic plans of the forelimbs of two different vertebrates shown
below.
. 2.1.1 Which body plan is represented by the above forelimbs? (1)
2.1.2 Explain your answer to question 2.1.1. (2)
GRAND TOTAL: 48
