Florida International University
Lab #6: Marine Plants/Submerged Aquatic Vegetation
Lab objectives: Understand the role of marine plants in the marine food web, their important ecosystem functions and the human threats against these ecosystems
Pre-lab assignment: Read handout on Marine Plants and review Mangrove ID guide
Task #1: Identification of Marine Plants/Submerged Aquatic Vegetation
• Taxonomic organizational hierarchy: Kingdom, Phylum, Class, Order, Family, Genus species
What taxonomic level is most inclusive? ___________Least inclusive?______________
• Kingdom Protista
Division Ochrophyta – brown algae
Division Rhodophyta – red algae
Kingdom Plantae
Division Chlorophyta – green algae
Division Anthophyta – seagrasses, salt marsh and estuarine grass
Task #2: BBC Scavenger Hunt
• Collect plants from the mangroves, the mangrove roots, docks, etc. as well as wade into the water to collect any benthic plants growing in the Bay
• Return to lab and draw the specimens provided as well as those you have collected (label the figures with Kingdom, Division, Genus, species, common name and any other distinguishing features).
• The team with the most different examples of marine plants will receive a bonus on their lab worksheet grade.
Task #3: Create-A-Key
• Example key: Animal…
1. a. has shell 2
b. has no shell 3
2. a. is segmented Arthropoda
b. is not segmented Mollusca
3. a. is symmetric 4
b. is asymmetric Porifera
4. a. is a vertebrate Chordata
b. is an invertebrate 5
5. a. has exoskeleton Echinodermata
b. has no exoskeleton Cnidaria
• Using the specimens you collected and the techniques involved in using a dichotomous key (use field guides, microscopes and other dichotomous keys), create a key to differentiate between all of your samples using the scientific terminology from your handouts and notes.
• Exchange keys with another team and have them use the key to identify your specimens.
Post-lab assignment: None. Submit this completed task sheet at the end of lab today.
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