essential biology g2 ecosystems & biomes

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

http://sciencevideos.wordpress.com/

http://tinyurl.com/24myx3e



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.





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 SecondaryExplanation

Example 1:

Example 2:





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:





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 -iii. 60mm y-1, 10oC -iv. 250-450mm y-1, 20-30oC -v. 0-50mm y-1,-15-0oC -



http://www.zoology.ubc.ca/~etaylor/413www/commun_dist2.html



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.





Works Cited1. Allott, Andrew. IB Study Guide: Biology for the IB Diploma. s.l. : Oxford University Press, 2007. 978-0-19-915143-1.

Self Assessment:

Essential Biology Assessment

Criterion Complete (2) Partially complete (1) Self MrT

Presentation & Organisation NA

File names sensible, work complete and well-presented. Filed in order of topic, and easy to

access. All command terms highlighted or underlined.

Academic Honesty NA

Sources cited using the CSE (ISO 690 numerical) method, with Works Cited section complete and correct.

Objective 1 understanding

All answers for the following command terms correct:

Most answers for the following command terms correct:

Define Draw Label List Measure State

Objective 2 understanding

All answers for the following command terms correct: Most answers for the following command terms correct:

Annotate Apply Calculate Describe Distinguish Estimate Identify Outline

Objective3understanding

All answers for the following command terms correct: Most answers for the following command terms correct:

Analyse Comment Compare Construct Deduce Derive Design Determine DiscussEvaluate Explain Predict Show Solve Sketch Suggest

Logic, notation, mathematical

workingNA

Answers are presented in a logical and concise manner. SI units used most times, with correct

unit symbols and definitions of terms. All mathematical working shown.

Further research NA

Evidence is apparent of research and reading beyond the textbook and presentations to find correct answers to challenging questions. If any questions are unanswered, this criterion scores

zero.

Total (max 10):



essential biology g2 ecosystems & biomes

Documents