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प्रश्न
Mention the drawbacks of potometer.
लघु उत्तरीय
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उत्तर
- It measures water uptake, not directly the actual amount of water transpired (some water is used in photosynthesis/turgidity).
- Introducing a single air bubble into the narrow capillary tube is very difficult.
- The cut twig may not stay alive for a long duration.
- Any minor change in atmospheric temperature can shift the position of the air bubble.
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