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Which organelles do mesophyll cells have more than root cells of a plant?
Do Onions have chloroplasts?
Do Onions have chloroplasts?
Life: Comparing Chloroplasts in Onions and Other Plant Cells
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Discussion Overview
The discussion revolves around the presence of chloroplasts in onion cells compared to other plant cells, particularly focusing on mesophyll and root cells. Participants explore the differences in organelle composition and the implications for photosynthesis and cellular respiration.
Discussion Character
- Exploratory
- Conceptual clarification
- Debate/contested
Main Points Raised
- Some participants note that mesophyll cells contain chloroplasts, while root cells do not contain chlorophyll.
- One participant expresses uncertainty about the presence of chloroplasts in onions, suggesting that their appearance may indicate a lack of chlorophyll.
- A question is raised regarding the presence of mitochondria in these cells.
- Another participant claims that root cells have a higher mitochondrial density than mesophyll cells.
- There is uncertainty about whether onions have chloroplasts, with one participant suggesting that the above-ground parts of the onion may contain chlorophyll, while the underground parts do not.
Areas of Agreement / Disagreement
Participants generally agree that mesophyll cells have chloroplasts and root cells do not, but there is disagreement and uncertainty regarding the presence of chloroplasts in onions specifically, as well as the implications of their structure.
Contextual Notes
Participants express uncertainty about the definitions and conditions under which chloroplasts may be present in different parts of the onion plant, particularly regarding the above-ground and underground structures.
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