Skip to main content
Pearson+ LogoPearson+ Logo
Ch. 37 - Soil and Plant Nutrition
All textbooksCampbell 12th EditionCh. 37 - Soil and Plant NutritionProblem 6
Previous problem
Next problem

Chapter 37, Problem 6

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.

Verified Solution
Video duration:
3m
This video solution was recommended by our tutors as helpful for the problem above.
Was this helpful?

Video transcript

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
Previous problem
Next problem
Related Practice
Textbook Question

Epiphytes are a. fungi that attack plants. b. fungi that form mutualistic associations with roots. c. nonphotosynthetic parasitic plants. d. plants that grow on other plants.

457
views
Textbook Question

Some of the problems associated with intensive irrigation include all of the following except a. soil salinization. b. overfertilization. c. land subsidence. d. aquifer depletion.

352
views
Textbook Question
. A problem with intensive irrigation is (A) overfertilization. (B) aquifer depletion. (C) the long-term depletion of soil oxygen. (D) the clogging of waterways by vegetation debris.
946
views
1
rank
Textbook Question

The greatest difference in health between two groups of plants of the same species, one group with mycorrhizae and one group without mycorrhizae, would be in an environment a. where nitrogen-fixing bacteria are abundant. b. that has soil with poor drainage. c. that has hot summers and cold winters. d. in which the soil is relatively deficient in mineral nutrients.

441
views
Textbook Question

Two groups of tomatoes were grown under laboratory conditions, one with humus added to the soil and one a control without humus. The leaves of the plants grown without humus were yellowish (less green) compared with those of the plants grown in humus-enriched soil. The best explanation is that a. the healthy plants used the food in the decomposing leaves of the humus for energy to make chlorophyll. b. the humus made the soil more loosely packed, so water penetrated more easily to the roots. c. the humus contained minerals such as magnesium and iron needed for the synthesis of chlorophyll. d. the heat released by the decomposing leaves of the humus caused more rapid growth and chlorophyll synthesis.

785
views
Textbook Question

The specific relationship between a legume and its mutualistic Rhizobium strain probably depends on a. each legume having a chemical dialogue with a fungus. b. each Rhizobium strain having a form of nitrogenase that works only in the appropriate legume host. c. each legume being found where the soil has only the Rhizobium specific to that legume. d. specific recognition between chemical signals and signal receptors of the Rhizobium strain and legume species.

491
views