Write the difference between autotrophs and heterotrophs.
Important Questions on Nutrition in Plants
The plant is placed in the dark. It's leaves turn brown when tested with an iodine solution.
Give a reason for the following statement:
A potted plant was kept in the dark for two days. After that, a stalk of leaves was taken from the plant. It was then placed in a bell jar containing a mixture of gases X and Y in equal volumes. This experiment set up was exposed to bright light for a period of time. Give reason how the volume of gas X decreased while the volume of gas Y increased. How will the leaves show the result when tested with Iodine solution?
Two leaves, M and N, were used in an experiment to demonstrate the conditions needed for photosynthesis to take place. Both leaves are taken from different species of plants. They are subjected to the same conditions.
After one hour under the Sun, both leaves are tested with iodine solution. The results are shown in the table.
| Leaf M | Test with iodine-the leaf turns blue-black |
| Leaf N | Test with iodine-the leaf turns brown |
Which of the following statements best explains the results of the experiment?
