Here I am providing the list of few questions of Central Board of Secondary Education class 12 Biology Exam Question Paper which you are looking for .

1. What would happen to the rate of photosynthesis in C3 plants if the CO2
concentration level almost doubles from its present level in the atmosphere ? 1
2. In humans, starch digestion begins in the buccal cavity but stops in the stomach.
Why ? 1
3. Name the two most biodiversity-rich zones of India. 1
4. Name the hormone that makes the plants more tolerant to various stresses. 1
5. Name the two major groups of cells required in attaining specific immunity. 1

Central Board of Secondary Education class 12 Biology exam paper





For the question paper , here is the attachment......................

Attached Files

12th standard previous years question.pdf (239.7 KB, 99 views)