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An investigation to identify the organism, algae or water
mold fungi, present in a water sample
http://www.brainpop.com/science/scientificinquiry/scientificmethod/
 More similar to animals
 Eat leaf litter in stream beds
 Attach to leaves SINK
 Intake O2 and exhale CO2
 Live in flowing fresh water streams
 Live on stream beds (bottom)
 Reproduce by spores
 Microscopic
 More similar to plants
 Need nutrients like Nitrogen (NO3-, NO2-)
 Make their own food PHOTOSYNTHESIS
 Need SUNLIGHT
 Intake CO2 and exhale O2
 Reproduce by dividing
 Live in calm fresh and marine waters
 Float near surface
 Microscopic
X
 Came from a freshwater sample
 Similar shape/ morphology
 Microscopic
 Similar size
You know that these organisms are either fungi or
algae…..but how will you determine their identities!?!?
 Using the information you learned about water mold
fungi and algae design a scientific experiment to
determine the identity of the organism in your water
sample
Who am I?
ALGAE
FUNGI
• Make their own food
• Eat leaves
• Attach to leaves/sink
• Inhale O2
• Live in flowing water
• Live on stream bottom
• Reproduce with spores
BOTH
• Live in
freshwater
• Microscopic
• Shape
• Float
• Intake CO2
• Prefer calm waters
• Live in surface water
• NEED light
• Reproduce by
dividing
• Need Nitrogen