This module uses barnacles, small filter feeding marine crustaceans that fix themselves on rocks and boats, as the basis for students to learn the principles of classification, taxonomy and phylogeny.
Darwin took eight years to study every known fossil and living barnacle and his work forms the basis upon which the serious study of barnacle classification and evolution has been based.
In this module students will study barnacle morphology, life histories and life styles as Darwin did. He based his classification and search for a common ancestor upon his studies. Recent work using genetic and molecular evidence and scanning electron microscopy shows how some of the key difficulties in drawing the phylogenetic tree of barnacles have been resolved very recently by systematists and how some new questions have been raised.
Artemia, the brine shrimp, is used to explore the body plan of arthropod crustaceans and to understand how the taxonomic hierarchy is worked out through simple microscope work.
All of the Brilliant Barnacles resources are stored on our Google Drive which you can access by clicking here. You can download the resources individually below.
Pack containing specification links, lesson notes, lesson timings, background information and answers to worksheets and tasks.https://drive.google.com/open?id=11NdKw9fZNaD4W0G56GtIvXvt1BXPr9qF
Pack of worksheets that accompany the module, includes extension activities and an exam-style question.https://drive.google.com/open?id=1O7xeeN__2Y46gf0ZiUk9dduZsF0LbCw0
Lesson 1 - Morphology and life histories of barnacles
Powerpoint presentation to accompany lesson notes in teacher's pack.https://drive.google.com/open?id=1NZ1XN_A_F71FNaXxTxYDdnlzCpc9YFXY
Lesson 2 - Building the tree of life - molecular evidence
Powerpoint presentation to accompany lesson notes in teacher's pack.https://drive.google.com/open?id=1uCg--lpQZwrmvAq4Y9TtTP79wEJFYcJ2
Lesson 3 - New evidence from scanning electron microscopy (SEM)
Powerpoint presentation to accompany lesson notes in teacher's pack.https://drive.google.com/open?id=1y4fMC8FbyDHnDNYP3VG3KckYUneld9_U
Darwin Inspired Scientists
Miranda Lowe, Collections Manager (Invertebrates) at the Natural History Museum, explains her work as a scientist and the legacy of Darwin's studies on barnacles.https://www.youtube.com/watch?v=dDEry2moVwU&index=1&list=PLgVH1uF5LKVVrgPsDnchSaBQZC8LEuxt4