Click on the image below to see a cool animation.
· internal transport
· gas exchange
· support and movement
· sensitivity and co-ordination
You may be comparing:
· limitations and advantages involved in each feature within each organism
· connections between two life processes within each organism which enhance the effectiveness of both processes
· limitations and advantages involved in each feature within each organism - linking adaptations.
You will be looking at how the adaptations affect its way of life as well.
Way of life encompasses the ways in which an organism carries out all its life processes. It includes:
· relationships with other organisms – competition, predation, parasitism, mutualism
· reproductive strategies
· adaptations to the physical habitat.
Usually for biology referencing is important as you are using sources such as the internet/ notes or books. For Level 2 Biology Referencing and how you do it should not influence your grade for Achieved or Merit but it may for excellence. You will need to provide a hard copy of your online resources to your teacher though if it has been a research assessment.
What do you need to reference?
Anything that you have read or heard that has influenced your writing:
• A concept or idea
• A paraphrased quote
• A direct quote
• Personal communication
• Class notes
What is the difference between a Bibliography and a List of References?
A bibliography is comprehensive, as it lists all the reading you did, including background reading.
A list of references, on the other hand, contains only the works you have cited in the text of your assignment.
Here are some examples of how you could reference within your work. (Click on image to see full size)
Adaptation involves the range of ways in which organisms have developed strategies to carry out the life processes. An adaptation refers to a feature and its function as it enables an organism to carry out a life process and thus occupy a specific ecological niche. It may include structural, behavioural, or physiological features of an organism. An adaptation provides an advantage for the organism in its specific habitat and ecological niche.
Here is an example using Darwins Finches.
There is genetic variation
within the species,can gain more food and be reproductively successful. Individuals best adapted to each the seeds of the balloon vine tend to leave more offspring.
individuals with longer beaks
Adding comparison to adaptive advantage
Longer mouth parts as a means to access a new and increasing food source over that of the short beaked bugs. There is a change in the population with an increasing prevalence of balloon vine as an invasive weed.
Definition from an exam.
Natural selection is where the
best suited individuals have a
greater chance of reproductive
The survival of the species is
individuals with more suited /
better adapted phenotypes will
compete more favourably than
others that are less suited and are
more likely to reproduce,
passing on their favourable
Favourable alleles will increase
in frequency within the
natural selection A good starter activity
The 3 modes of Natural Selection Excellent flash video to explain modes of Natural Selection
Large surface area
Moist surface to dissolve gases
Passive transport - Simple and facilitated diffusion, animated and narrated if you want.
Diffusion: is the passive movement of particles from a region of higher concentration to a region of lower concentration, as a result of the random motion of particles.
Tim and Moby diffusion Click here
How diffusion works - Narrated animation and a short quiz
An excellent intro video can be found below.
Resources that you may find helpful
Countercurrent exchange is a mechanism occurring in nature and mimicked in industry and engineering, in which there is a crossover of some property, usually heat or some component, between two flowing bodies flowing in opposite directions to each other.
Fish have gills over which water continually flows.
Gills are supported by water flowing over them, so are unsuitable for life on dry land.
The water has oxygen dissolved in it.
Biology L2 >