Question:
Pyrenoids are
Pyrenoids are
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Pyrenoids are starch-forming centers in chloroplasts of green algae.
Updated On: Jul 18, 2026
- Food storage bodies in Rhodophyceae
- Food storage bodies in Chlorophyceae
- Food storage bodies in Phaeophyceae
- Food storage bodies in Cyanophyceae
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The Correct Option is B
Solution and Explanation
Step 1: Understand pyrenoids.
Pyrenoids are specialized structures present inside chloroplasts of certain algae. They are associated with carbon fixation and storage of reserve food material. They are commonly studied in lower plant groups.
Step 2: Identify their function.
Pyrenoids are mainly involved in the synthesis and storage of starch. They act as centers where carbohydrates accumulate during photosynthesis, especially in algal cells.
Step 3: Determine occurrence.
Pyrenoids are prominently found in green algae (Chlorophyceae). They are associated with chloroplasts and help in starch formation and storage.
Step 4: Eliminate other options.
- Rhodophyceae: store floridean starch, not pyrenoids - Phaeophyceae: store laminarin and mannitol - Cyanophyceae: prokaryotic, lack chloroplast-based pyrenoids
Step 5: Final selection.
Since pyrenoids are characteristic of green algae and act as food storage centers, correct answer is Chlorophyceae.
Final Answer: \[ \boxed{\text{Food storage bodies in Chlorophyceae}} \]
Pyrenoids are specialized structures present inside chloroplasts of certain algae. They are associated with carbon fixation and storage of reserve food material. They are commonly studied in lower plant groups.
Step 2: Identify their function.
Pyrenoids are mainly involved in the synthesis and storage of starch. They act as centers where carbohydrates accumulate during photosynthesis, especially in algal cells.
Step 3: Determine occurrence.
Pyrenoids are prominently found in green algae (Chlorophyceae). They are associated with chloroplasts and help in starch formation and storage.
Step 4: Eliminate other options.
- Rhodophyceae: store floridean starch, not pyrenoids - Phaeophyceae: store laminarin and mannitol - Cyanophyceae: prokaryotic, lack chloroplast-based pyrenoids
Step 5: Final selection.
Since pyrenoids are characteristic of green algae and act as food storage centers, correct answer is Chlorophyceae.
Final Answer: \[ \boxed{\text{Food storage bodies in Chlorophyceae}} \]
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