Six bean seeds were left to soak in cold water. Three of them were boiled and then allowed to cool. The boiled seeds and the unboiled seeds were cut into pieces and then put on the surface of agar jelly that contained starch. After two days, all the seeds were taken out and the jelly was tested with iodine solution. The diagram shows the outcome of the experiment. What is the explanation for the results with the non-boiled bean seeds?
- AThey absorb iodine.
- BThey absorb starch.
- CThey contain acid.
- DThey contain amylase.