Lecture notes
Class notes for Chapter 10 Classification and Evolution AS Level Biology A OCR
- Module
- Classification and evolution
- Institution
- OCR
My class notes for classification and evolution
[Show more]
Seller
Follow
Content preview
Classification and Evolution Classification
The Five Kingdoms
Phylogeny
Evidence for Evolution
Types of Variation
Representing Variation Graphically
Adaptations
Changing Population Characteristics
Classification
,Scientists classify organisms in order to identify species, to predict characteristics and to find
evolutionary links.
Identifying Species – by using a clearly defined system of classification, the species an
organism belongs to can be easily identified. This allows scientists worldwide to share
research.
Predicting Characteristics – If several members of a group have similar characteristics, it is
likely that other species in the group will share these characteristics. These characteristics
can be either physical or behavioural.
Finding Evolutionary Links – Species in the same group probably share homologous features
because they have evolved from a common ancestor.
Shared Homologous Features e.g. the pentadactyl limb
All terrestrial
vertebrates
(mammals,
reptiles,
amphibians and
birds) share a
homologous
feature called the
pentadactyl limb.
Such as feature is
strong evidence that all organisms
possessing them have a common
ancestor. The great variation between
each is due to random mutations
through natural selection. In the course
of evolution, the bones in each animal
have adapted to their way of life.
The Five Kingdoms
, Kingdom Examples Unicellular or Cell Structure Movement Nutrition
Multicellular
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller hannahjackson392. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £5.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
52510 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now