Micronutrients are needed in very small amounts because a. most of them are mobile in the plant. b. most serve mainly as cofactors of enzymes. c. most are supplied in large enough quantities in seeds. d. they play only a minor role in the growth and health of the plant.

Video transcript

Hello everyone. And in today's video we have a problem involving micronutrients stating which one of the following statements is not true regarding micronutrients. So I want you to pay attention to this statement Not true and I want you to keep that in mind as we're going to be looking for the statement between our answer choices that is incorrect or is not true. So before we jump straight to solving the problem, let me quickly remind you of some of the characteristics or a comparison between micronutrients and micro micro nutrients. And so we're going to be using this table as we go to solve the problem. So let's begin by answer choice A they're needed in small amounts. Looking at the word micro nutrients, the term micro means small and this is exactly why they are called micronutrients. They're needed in small amounts in the cell while micro nutrients because they're called macro which means large, they are needed in larger amounts. So this answer choice which is is actually correct. So it is not the exception and we can cancel it out. Moving on. We have that they serve mainly esco factor of enzymes. And this is actually true. Looking at our table, they serve as co factors where they help our up certain reactions helping out enzymes. And this is one of the roles that these minerals these micronutrients do. And so this anti choice is actually correct as well and we cannot cancel it out. It is not the exception to the definition of a micro nutrient. Moving on we have there are essential for plant growth and health Now these reactions that they're used as co factors force these enzymes. These are reactions are essential for plant growth and health and to keeping the development of the plant in check. So these answer choices actually correct as well. And this also leaves us with answer choice D most of them our mobile in the plant. And this is where it gets a bit more complicated. Micronutrients are mostly minerals while macronutrients as we can see here, the most popular ones, these are non metals and non metals are going to be moving around the plant. They're mostly mobile within the plants depending on where the plant needs them. The most. On the other hand, these minerals these micronutrients are going to be immobile, they're going to be static in the places where they are absorbed and so they will not be mobile in the plants. And this answer choice is the exception. It is the answer choice that is not true. And we can highlight it as being our final answer. And so thank you very much for sticking around until the end of this video. I really hope it helped you