Question

Phycoerythrin is present in
a. Euglena
b. Polysiphonia
c. Chlamydomonas
d. Fucus

Answer 1

Biological pigments are called pigments or Bio chromes. Biological pigments involve plant pigments and flower pigments. In-plant pigments. Phycoerythrin is commonly called red protein pigment. As the name indicates it is present in red algae and cryptophytes.

Complete answer:
Let's study each option one by one

Option A is incorrect: Euglena, Euglena's two main pigments, are present I.e., orange-red carotenoids and green chlorophyll. Phycoerythrin is not present in Euglena.

Option B is correct: Phycoerythrin is commonly called red protein pigment. As the name indicates it is present in red algae and cryptophytes. Phycoerythrin is hard from the light-harvesting phycobiliprotein family. It is associated with the major chlorophyll pigments responsible for photosynthesis. The filamentous red algae genus is Polysiphonia. It is well-branched and belongs to the Rhodomelaceae family. Polysiphonia is a wide genus with about two- hundred species.

Option C is incorrect: Chlamydomonas species like C.nivalis have a red pigment called hemochrome. Which transmit red colour to melting snow. Phycoerythrin is not present in Chlamydomonas.

Option D is incorrect: Fucus is a genus of brown algae that generally contains chlorophyll, which gives green colour to plants. But the pigment that deposits brown algae separate from the plant is chlorophyll c, brown algae have pigment categorized as a carotenoid called fucoxanthin. Phycoerythrin pigment not present in focus.

Hence, the correct answer is option (B).

Note: Phycoerythrin found in Cryptophyceae and Cyanophyceae. R-PE (R- Phycoerythrin) is an orange fluorescent protein commonly found in blue-green algae and cyanobacteria. Red algae are commonly called Rhodophyta. It is known as red algae due to the presence of r- phycoerythrin, a water-soluble red pigment. However, R-phycoerythrin is sufficient and complete to coat chlorophyll a, which gives it its characteristic red colour.