3 B. Tricky Questions in Biology

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Question 11 : Question 11

In a open heart surgery the tube attached here to an instrument that supply oxygen is called as…. : In a open heart surgery the tube attached here to an instrument that supply oxygen is called as….

Oxygenator : Oxygenator First time used in 1953 Useful in : Coronary bypasses Heart transplants Removal and replacement of damaged valves Repair of other structural defects

Question 12 : Question 12

Potato is a stem or a root ? And why? : Potato is a stem or a root ? And why?

Slide 6 : The potato is another example of shoot Specialized for storage. The potato swells as sugars made in above-ground leaves are pumped into it and converted into starch for long term storage

Question 13 : Question 13

Can you recognize this microscope? : Can you recognize this microscope?

An Electron Microscope : An Electron Microscope Resolving power 0.2 Ao Can magnify 200000 times Invented by……. M Knoll and E Ruska

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