How does an autotroph get its food? a. it consumes other organisms as food. b. it absorbs food from its environment. c. it makes its own food. d. it makes its own food through cellular respiration.

The correct answer is option C, that is, it makes its own food.  

The autotrophs accumulate chemical energy in the form of carbohydrates, which they produce themselves. Food is the chemical energy accumulated in organic molecules. The majority of autotrophs convert sunlight to produce food, by the process known as photosynthesis.  

Only three species groups, that is, plants, some bacteria, and algae possess the tendency to perform the process of photosynthesis. The autotrophs are also known as producers, they start the food chains and feed all the forms of life.  

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

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