Biology
However, If the plant is large e.g. a tree, then the pyramid has a very thin base:
- Revision Notes
EAL Biology revision Sheet. This is not to be used on its own, but in conjunction with your notes, experiments, textbook and blog. Scientific MethodYou should be able to: · Identify variables · ...
- #65 Ecology
Ecology is the study of the ways in which organisms interact with their environment. Levels of ecological organisation A habitat is a type of environment in which an organism lives. For example, the habitat of a giraffe is grassland (savannah) with...
- #64.1 Ecology Syllabus 2015
? Levels of ecological organisation ? Energy flow through ecosystems ? Recycling of nitrogen Learning Outcomes Candidates should be able to: (a) define the terms habitat, niche, population, community and ecosystem and be able to recognise examples...
- Energy Pyramid
What is an Energy Pyramid? How does it relate to the food web?...
- 7. Ecosystem
Click here for PDFAn ecosystem is a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment. Types of ecosystems· Terrestrial ecosystem: Forest, grassland, desert etc· ...
Biology
Homework
Home work: Finish the analysis questions on pyramids of numbers and biomass.
Pyramids of Numbers
They often look like this:
However, If the plant is large e.g. a tree, then the pyramid has a very thin base:
In which case it is better to use a pyramid of biomass, the pyramid shape is maintained.
Indeed the pyramid of biomass relates to a pyramid of energy. Each trophic level uses energy and energy is "lost" to the surroundings as heat. The diagram below illustrates that only about 10% of the energy actually gets transferred from one trophic level to the next.
Explain why food chains tend to only contain 4 or 5 organisms
- Revision Notes
EAL Biology revision Sheet. This is not to be used on its own, but in conjunction with your notes, experiments, textbook and blog. Scientific MethodYou should be able to: · Identify variables · ...
- #65 Ecology
Ecology is the study of the ways in which organisms interact with their environment. Levels of ecological organisation A habitat is a type of environment in which an organism lives. For example, the habitat of a giraffe is grassland (savannah) with...
- #64.1 Ecology Syllabus 2015
? Levels of ecological organisation ? Energy flow through ecosystems ? Recycling of nitrogen Learning Outcomes Candidates should be able to: (a) define the terms habitat, niche, population, community and ecosystem and be able to recognise examples...
- Energy Pyramid
What is an Energy Pyramid? How does it relate to the food web?...
- 7. Ecosystem
Click here for PDFAn ecosystem is a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment. Types of ecosystems· Terrestrial ecosystem: Forest, grassland, desert etc· ...