Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Chapter 38, Problem 2A
If you wanted to conduct an experiment to determine the effects of varying levels of macronutrients on plant growth in your small greenhouse at home, which of the following macronutrients would be the most difficult to regulate?
a. Carbon
b. Nitrogen
c. Potassium
d. Phosphorus
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Students have asked these similar questions
You are asked to take care of your
teacher's favorite plant while she goes on
a research trip. She leaves a set of
special macronutrients supplement that
you can apply to the plant while she's
gone.
While in your care, you notice that the
plant has distinctive yellowing leaves
while the veins remain green.
Which supplement would most help this
plant?
Select one:
O a. Magnesium
O b. Phosphorous
O c. Nitrogen
O d. Sulfur
e. Calcium
For an element to be regarded as essential, all of the following criteria must be met, except: a. No other element can perform the function. b. The element is directly involved in plant nutrition. c. The element is inorganic. d. The plant cannot complete its lifecycle without the element.
An experiment was conducted to determine the deficiency symptoms of tomato plants placed in a hydroponic solution. Six bottles were prepared, and each bottle, except for the positive control, lacked a certain micronutrient. In the positive control, all nutrients were provided. Unexpectedly, the control setup still showed symptoms of micronutrient deficiency. It was then discovered that the relative humidity in the room was very high and transpiration was affected.
Explain the appearance of these symptoms in the positive control set-up in lieu of the importance of transpiration? How will thermoregulation of tomato plants be affected if transpiration will not occur?
Chapter 38 Solutions
Biology
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- Name the nine required macronutrients and the seven required micronutrients of plants.arrow_forwardCollege students have conducted an experiment to determine the deficiency symptoms of tomato plants that is placed in a hydroponic solution. Each bottle out of the six bottles except for the positive control has lacked a certain micronutrient. In the positive control, all the nutrients were provided. However, the control setup showed symptoms of micronutrient deficiency unexpectedly. College students later found out that the room has a very high relative humidity and the transpiration was affected. Theoretically, how will the thermoregulation of tomato plants be affected of transpiration will not occur?arrow_forwardThroughout history, spices have been used as preservatives and to cover up the smell or taste of food that is slightly spoiled. The success of some spices led to a magical, ritualized use, and possession of spices was often limited to priests or other powerful members of the community. a. Choose a spice and trace its use geographically and historically. What is its common use today? b. Spices grow and tend to be used predominantly in warmer climates. Explainarrow_forward
- Camellia and azalea are plants that produce yellow leaves, which is considered an undesirable outcome, when they are grown on alkaline soil. Which of the statements below support the fact about camellia and azalea stated above? a. Loam soil is not advisable to be used in growing camellia and azalea because of its acidity. b. Camellia and azalea should not be planted in chalk soil. c. Camellia and azalea produced yellow leaves because they are planted in acidic soil. d. Camellia and azalea require chalk soil to counter the effect of the alkaline soil used.arrow_forwardPlants make their own essential elements to complete their life cycle. We have figured out which elements are essential by using hydroponic culture, which involves growing plants in clay instead of soil. Micronutrients of plants include carbon, oxygen, and hydrogen. Plants only require a small amount of macronutrients which include zinc, copper, and iron. There are 4 mistakes in this paragraph, rewrite it to be correct.arrow_forwardDiscuss the differences between GE (Gross energy), ME (Metabolizable energy), and DE (Digestible Energy). Among the three values, which one is the most accurate estimate of energy value of a feedstuff and why?arrow_forward
- As scientists research and develop biofuels, they are faced with many tradeoffs. A plant's usefulness for biofuels depends on how much energy can be collected from the plant matter. In addition, growing plants on a large scale requires energy—such as the gasoline and power needed to run tractors and other harvesting equipment or the energy needed to create and distribute fertilizers and pesticides. An efficient biofuel would maximize the ratio of energy output to energy input. The following graph illustrates the results of a 10-year study analyzing three different crops used in biofuel production. The data show how much energy was required to grow each crop on 1 hectare of land (energy input) and how much energy was recovered from the total crop on each hectare of land (energy output). A hectare is a measurement of an area of land and is roughly the same as 2.5 acres. What was the estimated energy input of the grass? A. 2 kcal × 106 B. 4 kcal × 106 C. 8 kcal…arrow_forwardAs scientists research and develop biofuels, they are faced with many tradeoffs. A plant's usefulness for biofuels depends on how much energy can be collected from the plant matter. In addition, growing plants on a large scale requires energy—such as the gasoline and power needed to run tractors and other harvesting equipment or the energy needed to create and distribute fertilizers and pesticides. An efficient biofuel would maximize the ratio of energy output to energy input. The following graph illustrates the results of a 10-year study analyzing three different crops used in biofuel production. The data show how much energy was required to grow each crop on 1 hectare of land (energy input) and how much energy was recovered from the total crop on each hectare of land (energy output). A hectare is a measurement of an area of land and is roughly the same as 2.5 acres. What was the estimated energy input of the grass? A. kcal x 10^6 B. 2kcal x 10^6 C. 8kcal x 10^6arrow_forwardIf you were breeding cotton plants to have increased water uptake in dry soils, you could breed plants that contain more amino acids and carbohydrates in the root cells. Why would this be effective and why might crop yield be negatively affected?arrow_forward
- Nitrogen deficiency stunts plant growth and causesleaves to turn yellow and then die. Why does nitrogendeficiency cause these symptoms? Hint: Think aboutwhich biological molecules incorporate nitrogen atoms.arrow_forwardYou have been presented with leaf samples with various nutrient deficiency symptoms shown below. (i) Identify missing nutrients of a, b, c, and d based on Figure 2 below. b Maine Organic Farmers and Gardeners Association University of Massachusetts, Amherst d Allotment Garden Cellmax Nutrients Figure 2: Nutrient deficiency symptoms of tomato Where would you expect to find symptoms of nutrient deficiency for mobile and immobile nutrients? Also, determine the mobility of missing nutrients identified in Question 2 b) (i). (ii)arrow_forwardMicronutrients derives from the Greek prefix macro which means which of the following?arrow_forward
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