Multiple choice Essential elements according to their requirements are named as large nutrients and few nutrients macro nutrients and micro nutrients useful nutrients and non-useful nutrients macro elements and micro elements macro elements and nano elements Reveal answer Fill a bubble to check yourself B Correct answer Explanation Yes, it is correct. There are 17 essential elements, out of which 9 are present in large quantity in tissues, known as macro nutrients and 8 are present in small amounts in tissues, known as micro nutrients.