1: Algae and Fungi
After completing this lab you will be able to:
1. Differentiate between members of green, red, and brown algae.
2. Learn the characterisitics of the three types of Fungi observed in
3. Describe lichens and the organisms which comprise the
chromatography to separate photosynthetic pigments.
1. Read and study this laboratory.
2. Read Chapters 28 and 31 in Campbell (7
3. Bring 2-3 fresh leaves from a plant whose pigments you wish to
examine by TLC
4. Bring your copy of
A Photographic Atlas for the Biology
, 5th Edition.
5. Bring your personal protective gear (lab coat, safety goggles,
The term “algae” (singular, alga) refers to relatively simple,
eukaryotic, aquatic photo-autotrophs. Your text divides the algae into
seven groups: the
(red algae). Following the classification
scheme of your text (Campbell, 7
edition), all of these groups
except Rhodophyta hold the taxonomic status of phylum. Some
taxonomists advocate including the Chlorophyta (green algae) in the
Plant kingdom. (See Campbell, Figure 28.8, p. 554).
Because of time and availability you will only examine specimens
from the green, brown, and red algae in this laboratory.
base these groups on several characteristics (refer to Table 1-1)
including photosynthetic pigments, carbohydrate food reserves,
chloroplast structure, cell wall chemistry, type(s) of flagella, life
cycle, and habitat.
Red, brown, and green algae all have chlorophyll
However, green algae also have chlorophyll
(as do all
terrestrial plants), while brown algae have chlorophyll
pigments also differ among the three groups. Like plants, green algae