A mineral deficiency is likely to affect older leaves more than y...

Question

A mineral deficiency is likely to affect older leaves more than younger leaves if
a. the mineral is a micronutrient.
b. the mineral is very mobile within the plant.
c. the mineral is required for chlorophyll synthesis.
d. the mineral is a macronutrient.

Accepted Answer

Hello everyone. And in today's video we have the following problem which one of the following is not true regarding mobile nutrients. Remember that we're looking for the incorrect statement in our description. Answer choices regarding mobile nutrients. Now we know is let's quickly be reminded of what a mobile nutrient is so that we can use its definition to solve the problem. So if you recall from previous videos any nutrient really is a molecule that is using the metabolism of an organism. In the case of plants, they have what is called a mobile nutrients which is able to move from areas where it's not needed to areas that is needed. And this is why it's called a mobile nutrient. And some examples of mobile nutrient include nitrogen phosphorus protection and many more. So now that we notice that use this information to solve the problem. First of all we have the answer choice B states they can move from one part of the plan to another plant to another part And as we said, the fact that they are mobile allows them to move within the plants from areas where it's not needed to areas that is needed. So it's answer choice is actually correct and we can cancel it out as not being the exception and we have answer choice A. The deficiency is likely to affect all their leaves more than younger lives. If we think about how lives within a plant are situated, younger leaves are going to be closer to the site of growth of the plant. So this site requires a lot of nutrients and so there's going to be a lot of mobile nutrients heading to that area. So if there is a deficiency these younger leaves will not be as affected as they are in areas of high concentration of these mobile nutrients. And so these answer choices actually correct as well and we can cancel it out. Following we have they include nitrogen phosphorus protection, Mag nation and so forth. If we look at this list that we have here of examples of mobile nutrients, these molecules are actually mobile nutrients within plants. And more specifically if we look at the first three in our lives is nitrogen phosphorus and petition. These are some examples of something that we call macronutrients. And this takes us to answer choice D they are micronutrients. The fact that these are micro nutrients, it means that mobile nutrients some of these mobile nutrients are used heavily by the print in their metabolism. So the statement that they are micronutrients is actually incorrect. Some of these mobile nutrients that are actually macronutrients. So that is not true statement. That is the exception to our question and we can highlight it as our final answer. So thank you very much for sticking around until the end of this video and I really hope to see you on the next one

Watch next