Practical test 4 animal anatomy and ecology answer sheet
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IBO2012
SINGAPORE
PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY ANSWER SHEET
23rd INTERNATIONAL BIOLOGY OLYMPIAD
8
th
– 15
th
July, 2012
SINGAPORE
PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY
ANSWER SHEET
Total points: 100
Duration: 90 minutes
Page 1 of 9
Country: _____________________ Student Code: ________________
IBO2012
SINGAPORE
PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY ANSWER SHEET
Task I (20 points)
Anatomy of molluscs
Answer the following questions:
Q1.1 (3 points × 2 = 6 points)
1 2
Q1.2 (2 points × 2 = 4 points)
1 2
Q1.3 (2 points × 2 = 4 points)
1 2
Q1.4 (2 points × 2 = 4 points)
1 2
Q1.5 (0.4 points × 5 = 2 points)
a b c d e
Page 2 of 9
IBO2012
SINGAPORE
PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY ANSWER SHEET
Task II (80 points)
Rank-abundance plots, ABC curves and community structure
Q2.1 (16 points × 2 = 32 points) Tables 1 – 2.
Q2.2 (3 points × 4 = 12 points) Graphs 1 – 4.
Q2.2.1 (1 point × 5 = 5 points)
a b c d e
Q2.2.2 (2.5 points × 4 = 10 points)
1 2 3 4
Q2.2.3 (1.5 points × 4 = 6 points)
Highly disturbed → undisturbed
Q2.2.4 (1 point × 10 = 10 points)
1 2 3 4
Q2.25 and Q2.26 (2.5 points × 2 = 5 points)
Q2.2.5 Q2.2.6
Page 3 of 9
IBO2012
SINGAPORE
Student code: _______________ PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY
ANSWER SHEET
Table 1. Community 1 (16 points)
Species Abundance Rank
Log
10
(lg)
Abundance
%
Abundance
Cumulative %
Abundance
Biomass of
individual
Total
biomass of
species
% Biomass
Cumulative %
Biomass
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Total
Page 4 of 9
IBO2012
SINGAPORE
Student code: _______________ PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY
ANSWER SHEET
Table 2. Community 2 (16 points)
Species Abundance Rank
Log
10
(lg)
Abundance
%
Abundance
Cumulative %
Abundance
Biomass of
individual
Total
biomass of
species
% Biomass
Cumulative %
Biomass
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Total
Page 5 of 9
IBO2012
SINGAPORE
Student code: _______________ PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY
ANSWER SHEET
Graph 1 (3 points)
Page 6 of 9
IBO2012
SINGAPORE
Student code: _______________ PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY
ANSWER SHEET
Graph 2 (3 points)
Page 7 of 9
IBO2012
SINGAPORE
Student code: _______________ PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY
ANSWER SHEET
Graph 3 (3 points)
Page 8 of 9
IBO2012
SINGAPORE
Student code: _______________ PRACTICAL TEST 4
ANIMAL ANATOMY & ECOLOGY
ANSWER SHEET
Graph 4 (3 points)
Page 9 of 9
