Question
Download Solution PDFMatch the columns.
Colum-A (Class) |
Column-B (Common name) |
||
i. |
Chlorophyceae |
a. |
Brown algae |
ii. |
Phaeophyceae |
b. |
Green algae |
iii. |
Rhodophyceae |
c. |
Blue-green algae |
iv. |
Cyanophyceae |
d. |
Red algae |
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is i - b, ii - a, iii - d, iv - c. Key Points
- Chlorophyceae:-
- It is a class of green algae, distinguished mainly on the basis of ultrastructural morphology.
- They are usually green due to the dominance of pigments chlorophyll a and chlorophyll b.
- The chloroplast may be discoid, plate-like, reticulate, cup-shaped, spiral- or ribbon-shaped in different species.
- Most of the members have one or more storage bodies called pyrenoids located in the chloroplast.
- Pyrenoids contain protein besides starch. Some green algae may store food in the form of oil droplets.
- Phaeophyceae:-
- It also known as brown algae, is a class of multicellular algae that are found primarily in marine environments.
- They are distinguished by their brown color, which is due to the presence of the pigment fucoxanthin.
- Brown algae range in size from microscopic filaments to giant kelp forests that can reach over 60 meters in length.
- Cyanophyceae:-
- It is known as Cyanobacteria, is a class of prokaryotic organisms that obtain energy via photosynthesis.
- It is known as Blue-green algae.
- They are considered to be the oldest form of life on Earth, with fossils dating back over 3.5 billion years.
- Cyanobacteria are found in a wide variety of habitats, including freshwater, marine, and terrestrial environments.
- Rhodophyceae:-
- It also known as red algae, is a class of eukaryotic algae that are found primarily in marine environments.
- They are distinguished by their red color, which is due to the presence of the pigment phycoerythrin.
- Red algae range in size from microscopic filaments to large, complex seaweeds.
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