Which classes of algae possess chlorophyll a, chlorophyll c, carotenoids and xanthophylls?a)Rhodophyceaeb)Chlorophyceaec)Phaeophyceaed)All of the theseCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Option C is correct phyophycea or brown algai possess   chlorophyll A, c carotinoids, xanthophyll pigments..

Answer

Correct ans. is 4th because alginic acid is an anionic polysaccharide distributed widely in the cell walls of many brown algae (phaeophceae). it's a phycocolloid which is obtained from laminaria, fucus.

Answer

Phaeophyceae or brow algae posses chlorophyll a and chlorophyll c,  carotenoids and  xanthophylls.

Answer

Chlorophyll a, chlorophyll c, carotenoids, and xanthophylls are pigments found in different classes of algae. In this case, the correct answer is option 'C', which states that all of these classes of algae possess these pigments.

Chlorophyll a is the primary pigment involved in photosynthesis and is present in all classes of algae. It plays a vital role in capturing light energy and converting it into chemical energy.

Chlorophyll c is a secondary accessory pigment found in some classes of algae, including the Chlorophyceae (green algae). It assists chlorophyll a in capturing light energy, broadening the range of wavelengths that can be utilized for photosynthesis.

Carotenoids are another group of accessory pigments that are present in algae. They include pigments such as beta-carotene, lutein, and zeaxanthin. Carotenoids help in capturing additional light energy and protecting the chlorophyll molecules from damage caused by excessive light.

Xanthophylls are a subgroup of carotenoids that are also present in algae. They include pigments such as fucoxanthin, which gives a brown color to some classes of algae (e.g., Phaeophyceae or brown algae). Xanthophylls play a role in light harvesting, photoprotection, and in some cases, as antioxidants.

Therefore, all the mentioned classes of algae possess chlorophyll a, chlorophyll c, carotenoids, and xanthophylls. Algae belonging to the Rhodophyceae (red algae), Chlorophyceae (green algae), and Phaeophyceae (brown algae) all contain these pigments. These pigments are essential for their photosynthetic processes and contribute to their characteristic colors.

Answer

Option (c) is correct because brown algae (phaeophyceae)  brown colour of algae is due to the presence of large amount of xanthophyll called fucoxanthin. It has photosynthetic organelles or chromatophores possess 3 thylakoid lamellae. Photosynthetic pigments include chlorophyll a , c and carotenoids

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