Q. Consider the following statements:

1. The internal energy reserve for plants is starch and for human beings is glycogen.
2. Carbon and energy requirements of the autotrophic organism are fulfilled by photosynthesis.

Which of the above is / are correct?
Answer: Both 1 and 2
Notes: Plant store carbohydrates in the form of starch which act as internal energy reserve and animals have carbohydrates as the energy reserves but store it in the form of glycogen. Carbon and energy requirements of the autotrophic organism are fulfilled by photosynthesis. It is the process by which autotrophs take in substances from the outside and convert them into stored forms of energy. This material is taken in the form of carbon dioxide and water which is converted into carbohydrates in the presence of sunlight and chlorophyll.