Algae Biology Lab Report

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Pre-lab questions:
1. Algae belong to what Kingdom?
They belong to the Kingdom Protista.
2. What are the three types of multicellular algae?
The three types if multicellular algae are chlorophyta which are green algae, phaeophyta which are brown algae, and rhodophyta which are red algae. 3. Are algae autotrophs or heterotrophs?
Algae are autotrophs.
4. What organelle allows plants (and plantlike protists) to photosynthesize? The chloroplasts allow plants and plantlike protists to photosynthesize. Objective:
The goal of this lab is to identify and explore common features between organisms of the same kingdom. Theoretical Background:
Plantlike Protists:
- commonly referred to as algae
- have organelles called chloroplasts which contain chlorophyll that help them carry out photosynthesis - are autotrophs therefore they use photosynthesis for nourishment - there is 4 different phyla: euglenoids, chrysophytes, diatoms, and dinoflagellates - these algae can be given a variety of colors because they have accessory pigments that absorb light

Hypothesis:
If organisms are in the kingdom Protista, then they share common structures. Materials:
3 microscope slides
water
1 sample of volvox
1 sample of euglena
1 sample of spirogyra
3 cover slips
3 medicine droppers
1 microscope
1 piece of paper

Procedure:
1. Using the first medicine dropper, take a sample of euglena and place it on the first microscope slide. 2. Place a cover slip over the sample of euglena and onto the slide. 3. Observe the euglena slide under the low power objective first. 4. Sketch the euglena and note observations.

5. Observe the euglena under the high power objective and note observations at this higher magnification. 6. Darken half of the viewing field by placing paper over the microscope's light source or by rotating the diaphragm. 7. Prepare a wet slide mount for the sample of spirogyra by repeating steps 1-2. 8. Observe the spirogyra under...
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