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Looks at the evolution, phylum characteristics, major classes, larval development and natural history of annelids. The phylum ‘Annelida’ is made up of segmented worms in three classes: Oligochaetes...
Compares and contrasts three major phyla of worms; flatworms (platyhelminthes), roundworms (nematodes) and segmented worms (annelids). The approach to flatworms is physiological, showing the nervous system,...
A support video for the course, covering the following topics: Band 1: Investigating Life on a Small Scale - examines some of the special problems encountered by very small, i.e. unicellular, organisms,...
The marine annelid ‘Nereis fucata’ lives in snail shells inhabited by hermit crabs (here ‘Pagurus bernardus’). There have been no morphological adaptations. The important behavioural elements (i.e....
'Erpobdella octoculata’, ‘Hirudo medicinalis’ (medicinal leech), ‘Haemopis sanguisuga’ (horse leech), ‘Glossiphonia’ (snail leech), ‘Helobdella stagnalis’, ‘Piscicola geometra’ (fish...
Sea urchins and snails, worms and whales, crabs and crayfish - the ocean seethes with a wealth of animal forms. Can we tease any underlying patterns from this immense diversity? This programme looks at a...
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