This 21-slide powerpoint presentation covers 'Topic 5.4 - Cladistics' in the 2016 IB Biology curriculum. Each slide includes the specific learning objective as well as key vocabulary that students should note. The topic has been divided into two sections:
• A - Clades & Cladograms
• B - Reclassification
The presentation itself contains minimal information as it is intended to be used with teacher guidance. There are sometimes 'Video' throughout which link to relevant and informative YouTube content. The slides are formatted to be visually pleasing and to also print well for handouts or revision. Please see the preview file (first 8 slides) for an idea of the aesthetic and level of detail in the presentation. The relevant 'Essential Knowledge' can be found below.
I have had success using these presentations to review topics after students have been exposed to the material at home. I typically have the class read relevant material (book, site, etc.) and then watch the videos the day before introducing a topic. During the class period, I use the slides to structure the discussion around the IB Bio Understandings. The remaining class time is spent reinforcing the knowledge or working on activities, written test practice, or nature of science.
**These presentations are based on the IB Biology Course Guide and do not follow any textbook
As always, please let me know if you have any suggestions for improvements. These are always a work in progress!
U1: A clade is a group of organisms that have evolved from a common ancestor.
U2: Evidence for which species are part of a clade can be obtained from the base sequences of a gene or the corresponding amino acid sequence of a protein.
U3: Sequence differences accumulate gradually so there is a positive correlation between the number of differences between two species and the time since they diverged from a common ancestor.
U4: Traits can be analogous or homologous.
U5: Cladograms are tree diagrams that show the most probable sequence of divergence in clades.
U6: Evidence from cladistics has shown that classifications of some groups based on structure did not correspond with the evolutionary origins of a group or species.
A1: Cladograms including humans and other primates.
A2: Reclassification of the figwort family using evidence from cladistics.
S1: Analysis of cladograms to deduce evolutionary relationships.
Dokimi IB Biology Products
IB Biology SL PPT Bundle
Topic 1 - Cell Biology PPT Bundle
• 1.1 - Intro to Cells PPT
• 1.2 - Ultrastructures of Cells PPT
• 1.3 - Membrane Structure PPT
• 1.4 - Membrane Transport PPT
• 1.5 - Origin of Cells PPT
• 1.6 - Cell Division PPT
Topic 2 - Molecular Biology PPT Bundle
• 2.1 - Molecules to Metabolism PPT
• 2.2 - Water PPT
• 2.3 - Carbohydrates & Lipids PPT
• 2.4 - Proteins PPT
• 2.5 - Enzymes PPT
• 2.6 - Structure of DNA & RNA PPT
• 2.7 - DNA Replication, Transcription & Translation PPT
• 2.8 - Cell Respiration PPT
• 2.9 - Photosynthesis PPT
Topic 3 - Genetics PPT Bundle
• 3.1 - Genes PPT
• 3.2 - Chromosomes PPT
• 3.3 - Meiosis PPT
• 3.4 - Inheritance PPT
• 3.5 - Genetic Modification & Biotechnology PPT
Topic 4 - Ecology PPT Bundle
• 4.1 - Species, Communities & Ecosystems PPT
• 4.2 - Energy Flow PPT
• 4.3 - Carbon Cycling PPT
• 4.4 - Climate Change PPT
Topic 5 - Evolution & Biodiversity PPT Bundle
• 5.1 - Evidence for Evolution PPT
• 5.2 - Natural Selection PPT
• 5.3 - Classification of Biodiversity PPT
• 5.4 - Cladistics PPT
Topic 6 - Human Physiology PPT Bundle
• 6.1 - Digestion & Absorption PPT
• 6.2 - The Blood System PPT
• 6.3 - Defense Against Infectious Disease PPT
• 6.4 - Gas Exchange PPT
• 6.5 - Neurons & Synapses PPT
• 6.6 - Hormones, Homeostasis & Reproduction PPT
Topic 7 - Nucleic Acids
• 7.1 - DNA Structure & Replication PPT