Essential Biology G2 Ecosystems & Biomes
Due Date:
Student Name:
Candidate Number: 002171-xxx
Blog resource: http://tinyurl.com/24myx3e
Cite all sources using the CSE method (or ISO 690 Numerical in Word). The first example has been done for you.
Complete the self-assessment rubric before submitting to Moodle. Avoid printing this if possible.
1. Define the following terms:
Gross production: the total amount of organic matter produced by plants in an ecosystem. (1 p. 154)
Net production
Biomass
2. Explain why gross production is always higher than net production.
3. State the calculation for determining gross production, net production and respiration.
4. The following passage outlines some of the energy flow in an ecosystem.
From the IB Biology QuestionBank CDRom
a. Calculate the efficiency (in %) of the conversion of light energy into gross production.
b. Draw a pyramid of energy for the ecosystem.
c. Explain the shape of the pyramid of energy.
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Essential Biology G2 Ecosystems & Biomes
Due Date:
Student Name:
Candidate Number: 002171-xxx
5. Study the energy flow diagram below.
From the IB Biology QuestionBank CDRom
a. Calculate the net production of the autotrophs.
b. Calculate the percentage of energy lost as heat in:
i.
Autotrophs
ii.
Heterotrophs
c. Suggest reasons for the differences in energy loss as heat between autotrophs and
heterotrophs.
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Essential Biology G2 Ecosystems & Biomes
Due Date:
Student Name:
Candidate Number: 002171-xxx
6. Discuss the difficulties of classifying organisms into trophic levels.
7. Explain the small biomass and low numbers of organisms in higher trophic levels.
8. Discuss how the high-meat diet of the developed world (which is aspired to by many developing
nations) may be speeding our approach of the planet’s carrying capacity for humans, and some
of the steps that can be taken to reduce this effect.
9. Describe what is meant by ecological succession.
10. Distinguish between primary and secondary succession, with examples:
Primary
Secondary
Explanation
Example 1:
Example 2:
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Essential Biology G2 Ecosystems & Biomes
Due Date:
Student Name:
Candidate Number: 002171-xxx
11. Describe the effects of succession on the following factors:
Productivity
Biomass
Biodiversity
12. Explain the following ways in which living organisms affect the abiotic environment in primary
succession:
Soil composition & strength
Organic nutrients
Mineral Nutrients
Water uptake
13. Distinguish between biome and biosphere.
14. Explain how rainfall and temperature affect the distribution of biomes.
15. Whittaker’s Climograph is a well-known representation of temperature, rainfall and distribution
of biomes in the world:
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Essential Biology G2 Ecosystems & Biomes
Due Date:
Student Name:
Candidate Number: 002171-xxx
From http://www.zoology.ubc.ca/~etaylor/413www/commun_dist2.html
a. Identify the biomes likely to be found under these conditions:
i.
180mm y-1, 10oC
ii.
0-50mm y-1,0-30oC
-1
o
iii.
60mm y , 10 C
-1
o
iv.
250-450mm y , 20-30 C v.
0-50mm y-1,-15-0oC
-
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Essential Biology G2 Ecosystems & Biomes
Due Date:
Student Name:
Candidate Number: 002171-xxx
b. Describe the characteristics of the following biomes, using individual climographs and
including details of vegetation. You can print this page if you wish.
c. Outline how climate change leads to species migration, redistribution and possible
extinction.
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
Essential Biology G2 Ecosystems & Biomes
Due Date:
Student Name:
Candidate Number: 002171-xxx
Works Cited
1. Allott, Andrew. IB Study Guide: Biology for the IB Diploma. s.l. : Oxford University Press, 2007. 978-019-915143-1.
Self Assessment:
Essential Biology
Criterion
Presentation &
Organisation
Academic
Honesty
Objective 1
understanding
Objective 2
understanding
Objective3
understanding
Logic, notation,
mathematical
working
Further research
Complete (2)
Assessment
Partially complete (1)
Self
File names sensible, work complete and wellpresented. Filed in order of topic, and easy to
NA
access. All command terms highlighted or
underlined.
Sources cited using the CSE (ISO 690 numerical)
method, with Works Cited section complete and
NA
correct.
All answers for the following command terms
Most answers for the following command terms
correct:
correct:
Define
Draw
Label
List
Measure State
Most answers for the following command terms
All answers for the following command terms correct:
correct:
Annotate Apply
Calculate Describe Distinguish Estimate Identify
Outline
Most answers for the following command terms
All answers for the following command terms correct:
correct:
Analyse Comment Compare Construct Deduce Derive Design Determine Discuss
Evaluate
Explain Predict
Show Solve
Sketch Suggest
Answers are presented in a logical and concise
manner. SI units used most times, with correct
NA
unit symbols and definitions of terms. All
mathematical working shown.
Evidence is apparent of research and reading
beyond the textbook and presentations to find
correct answers to challenging questions. If any
NA
questions are unanswered, this criterion scores
zero.
Total (max 10):
Stephen Taylor
Bandung International School
http://sciencevideos.wordpress.com
MrT