Multiple choice

If photosynthesis proceeds for an hour in atmosphere with radioactive carbon dioxide, then the labelled carbon will be mostly found in

  1. sugar

  2. starch

  3. both sugar and starch

  4. phosphoglyceralaldehyde

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Exclusive photosynthesis for about an hour will lead to the formation of both sugar and starch. Hence, labelled carbon will be found in these forms together.