BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 26, Problem 1CT
Summary Introduction
To explain:
The importance of nitrogen for the plants.
Introduction:
Plants are autotrophic organisms that are present on the Earth. Plants take nutrients from the soil and the environment. They require carbon dioxide and water in the presence of sunlight to make glucose. The deficiency of nutrients leads to retardation in the growth of the plant.
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Why are deficiency symptoms of immobile elements more pronounced in younger than in older leaves? Why do plants seldom exhibit deficiency symptoms of carbon, hydrogen and oxygen although they are used by the plant in large quantities? And lastly, what is the role of pH in nutrient availability?
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.
Describe the movement of an atom of nitrogen from the leaf of a plant, through the process of decomposition, and back into the root of another plant.
Chapter 26 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 26 - Prob. 1SACh. 26 - Prob. 2SACh. 26 - Prob. 3SACh. 26 - Prob. 4SACh. 26 - The nutrition of some plants is enhanced by a...Ch. 26 - Water evaporation from plant parts is called...Ch. 26 - Prob. 7SACh. 26 - Prob. 8SACh. 26 - Sieve tubes are part of ___________. a. cortex c....Ch. 26 - Prob. 10SA
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- Why are plants that consume 30 ATP molecules to produce one molecule of glucose (rather than the usual 18 molecules of ATP per glucose molecule) favored in hot climates but not in cold climates? What role does temperature play?arrow_forwarddescribe the symptoms of nutrient deficiency in plants.arrow_forwardAbout half the dry weight of a plant's body is carbon. Where do plants get the carbon? From water From sunlight From dead organic matter in the soil From CO2arrow_forward
- In a rainforest there are a wide variety of plants. Short plants have broad, flat leaves . Tall plants have small, narrow leaves. What is an advantage of short plants having broad , flat leaves ? to transport nutrients through the plant to prevent water loss from transpiration to obtain energy by breaking bonds in glucose to capture energy used for photosynthesisarrow_forwardAnimals typically use fats in adipose tissues for longterm energy storage, whereas plants use starch in roots. How do animals benefit from using fat? How do plants benefit from using starch? Name two plants that storeenergy for many years. How long is long-term storage for these species? What two plant parts often use fats and why? Storage tissue in enlarged roots is vascularized. How is that important to the plant?arrow_forwardIn order to increase nutrient uptake, plant roots will often exude ____ ions into the soil, which will tend to ____ the pH of the soil. Select one: a. H+, increase b. OH-, increase c. H+, decrease d. OH-, decreasearrow_forward
- If plants need CO2 to construct glucose (by photosynthesis), why is the rising level of CO2 in the atmosphere cause for concern? You’d think more CO2 would accelerate plant growth, and that would be a good thing.arrow_forwardThe reduction of NAD+ to NADH during glycolysis is a problem. Why is this less of a problem if roots absorb nitrates and sulfates or if the plant is synthesizing fatty acids?arrow_forwardWhich of the following statements is incorrect?a. Pigments absorb light of certain wavelengths only.b. Some accessory pigments are antioxidants.c. Chlorophyll is green because it absorbs green light.arrow_forward
- As energy passes from blue-absorbing chlorophylls down to red-absorbing chlorophylls, surprisingly, no energy passes from lower energy-absorbing pigments back to higher ones (in other words, the process is irreversible). Why might that be?arrow_forwardWhich of the following accessory pigments is the first e- acceptor in the electron transport chain? A. plastoquinone B. ferredoxin C. pheophytin D. plastocyaninarrow_forwardWhich of the following statements is incorrect? a. Pigments absorb light of certain wavelengths only. b. Many accessory pigments are multipurpose molecules. c. Chlorophyll a is green because it absorbs green light.arrow_forward
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