Question

A trace element is an element which

• A. Is a radioactive and can be traced by geiger counter
• B. Is required in very minute amounts
• C. Draws other element out of protoplasm
• D. Was one of the first to be discovered in protoplasm

Answer 1

The correct option is B Is required in very minute amounts

Plants require a number of mineral elements for their proper growth and development. Some of the minerals like nitrogen, phosphorous, potassium etc. are required in large amounts, called macronutrients, while some of the minerals like iron, chlorine etc. are required in comparatively smaller amounts and are called micronutrients. Trace elements are elements like nickel, which are required in extremely minute quantity.