Lab1_algae and fungi

Lab1_algae and fungi - Laboratory 1 Algae and Fungi 20...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Algae and Fungi Laboratory 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
20 Laboratory 1: Algae and Fungi OBJECTIVES Teaching Objectives 1. Differentiate between members of green, red, and brown algae. 2. Learn the characterisitics of the Phyllum Fungi observed in lab. 3. Review the organisms which comprise lichens. 4. Use paper chromatography to separate photosynthetic pigments of green plants and algae. Student Learning Objectives (SLO) 1. Differentiate between the red, brown, and green algae and compare them using Table 1. 2. Be able to identify the Phylla of Fungi presented in this lab. 3. Observe the microscopic structure of the different fungi 4. Understand the composition of lichens and their ecological role. 5. Learn the basics of paper chromatography. 6. Use chromatography to understand the origin of land plants LAB PREPARATION 1. Review this laboratory and procedures. . 2. For background read Chapters 28 and 31 in Campbell (7 th Ed.) 3. Bring 2-3 fresh leaves from a plant whose pigments you wish to examine by paper chromatography. 4. Bring your copy of A Photographic Atlas for the Biology Laboratory , 5th Edition to the lab. 5. Bring your personal protective gear (lab coat, safety goggles, safety gloves). INTRODUCTION A. Algae The term “algae” (singular, alga) refers to relatively simple, eukaryotic, aquatic photo-autotrophs. Your text divides the algae into seven groups: the Dinoflagellata (dinoflagellates), Chrysophyta (golden algae), Bacillariophyta (diatoms), Euglenophyta (euglenoids), Chlorophyta (green algae), Phaeophyta (brown algae), and Rhodophyta (red algae). Following the classification scheme of your text (Campbell, 7 th 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. Biologists base these groups on several characteristics (refer to Table 1-1) including photosynthetic pigments, carbohydrate food reserves,
Background image of page 2
Laboratory 1: Algae and Fungi 21 chloroplast structure, cell wall chemistry, type(s) of flagella, life cycle, and habitat. Table 1. characteristics of red, green, and brown algae. Red, brown, and green algae all have chlorophyll a in their chloroplasts. However, green algae also have chlorophyll b (as do all terrestrial plants), while brown algae have chlorophyll c . Accessory pigments also differ among the three groups. Like plants, green algae possess -carotene as an accessory pigment. Brown algae possess fucoxanthin, which gives them their characteristic brown color. Red algae have phycoerythrin, a red accessory pigment that belongs to a family of pigments called phycobilins. The body of a red, brown, or green alga is usually referred to as the
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 14

Lab1_algae and fungi - Laboratory 1 Algae and Fungi 20...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online