Name Section Number EXERCISE Protists II Post-Lab Questions 5.1 Phylum Rhodophyt
ID: 220016 • Letter: N
Question
Name Section Number EXERCISE Protists II Post-Lab Questions 5.1 Phylum Rhodophyta: Red Algae While wading in the warm salt water off the beaches of the Florida Keys on spring break, you stoop down to look at the feathery alga shown here. (a) What pigment gives this organism its coloration? 1. (b) What commercial products are derived from this phylum? 5.2 Phylum Chlorophyta: Green Algae 2. What two characteristics found within the green algae are clues that this group of organisms is more closely related to the land plants than red algae? 5.3 Phylum Charophyta: Desmids and Stoneworts 3. Your class takes a field trip to a freshwater stream, where you collect the organism shown microscopi- cally here. (a) What is the genus name of this organism? (b) Identify and give the function of the structure within the chloroplast at the end of the leader (line). 5.4 Phylum Amoebozoa: Slime Molds and Amoebas 4. This photomicrograph was taken from a prepared slide of a stained specimen. You observed unstained living specimens in lab Describe the mechanism by which it moves from place to place.Explanation / Answer
5.1. a) Phycobolins pigment gives this organism its coloration.
b) The commercial products are derived from this phylum are ice cream and beer.
5.2. Two characteristics are found within the green algae are clues that this group of organisms is more closely related to the land plants than red algae: Store carbohydrates and photosynthetic pigments.
5.3. a)The genus name of this organism is Spirogrya.
b) Pyrenoid within the chloroplast. Pyrenoids are sub-cellular micro-compartments found in chloroplasts of many algae. They are associated with the operation of a carbon-concentrating mechanism.
5.4.Some organisms moves from place to place by the help of pseudopodium.It is a retractile process of the cytoplasm of a cell, which acts as an organ of locomotion and taking up food or other particulate matter.
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