Biological Question:
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Tell me what are the limitations of ECG?

Answer:

• It reveals the heart rate and rhythm only during the time ECG is taken. If there is any intermittent cardiac rhythm, it is more likely to miss them
• Many times it observed that what appears abnormalities on ECG, sometimes have no medical significance
• ECG can often be normal or nearly normal in patients suffering from coronary artery disease

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Primary phloem develops from
A. lateral meristem
B. protoderm
C. extrastelar cambium
D. provascular tissue		Photosynthesis takes place faster in
A. yellow light
B. white light
C. red light
D. darkness