Plant Nutrient Deficiencies in Plant Physiology - Midterms Topic Outline
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Questions and Answers

What is the term for the occurrence when an essential nutrient is not available in sufficient quantity to meet the requirements of a growing plant?

  • Toxicity
  • Immobile
  • Nutrient deficiency (correct)
  • Stunting
  • Which group of nutrients includes Boron (B), Calcium (Ca), and Iron (Fe) among others, that cannot move within the plant?

  • Zn
  • N, P, K, Cl, Mg, Mo
  • Fe, Mn, Ni, S
  • B, Ca, Cu (correct)
  • What is the term for spotted, irregular, inconsistent patterns observed on plant tissues?

  • Necrosis
  • Mottling (correct)
  • Stunting
  • Chlorosis
  • In plant physiology, what does the term 'interveinal chlorosis' refer to?

    <p>Yellowing between leaf veins while the veins remain green</p> Signup and view all the answers

    Which method involves checking the surroundings and buildings around the plant to diagnose plant issues?

    <p>Soil testing</p> Signup and view all the answers

    What symptom is described as a decrease in growth resulting in shorter height of affected plants?

    <p>Stunting</p> Signup and view all the answers

    Which element is a constituent of carbohydrates, necessary for photosynthesis?

    <p>Carbon (C)</p> Signup and view all the answers

    Which element is important in energy transfer and is a constituent of many proteins, coenzymes, nucleic acids, and metabolic substrates?

    <p>Phosphorus (P)</p> Signup and view all the answers

    Which element is involved in oxygen production during photosynthesis and is present in chlorophyll synthesis enzymes?

    <p>Chlorine (Cl)</p> Signup and view all the answers

    Which element is an enzyme activator, found in chlorophyll, and is a component of cell walls?

    <p>Calcium (Ca)</p> Signup and view all the answers

    Which element controls several oxidation-reduction systems, and plays a role in photosynthesis?

    <p>Manganese (Mn)</p> Signup and view all the answers

    Which element is believed to be important in sugar translocation and carbohydrate metabolism, as well as found in enzymes for electron transfer?

    <p>Boron (B)</p> Signup and view all the answers

    Which nutrient element is absorbed in the form of NO3-?

    <p>Nitrogen (N)</p> Signup and view all the answers

    What nutrient deficiency symptom is associated with reddish purple and drying of tips on younger leaves?

    <p>Phosphorus deficiency</p> Signup and view all the answers

    Which nutrient deficiency symptom causes edges of older leaves to look scorched, yellowing between the veins, and dead spots?

    <p>Potassium deficiency</p> Signup and view all the answers

    What is the concentration range for Copper (Cu2+) in dry plant tissue?

    <p>5 - 20 ppm</p> Signup and view all the answers

    Which nutrient results in small dead spots appearing in areas that have yellowed but with green veins?

    <p>Manganese (Mn)</p> Signup and view all the answers

    What does a Boron deficiency cause in young leaves?

    <p>Twisted appearance</p> Signup and view all the answers

    What color precipitate is formed in Benedict's test?

    <p>Brick red</p> Signup and view all the answers

    In Seliwanoff's test, what color solution is observed?

    <p>Orange or red</p> Signup and view all the answers

    What is the purpose of the iodine test?

    <p>To identify photosynthetic pigments</p> Signup and view all the answers

    What type of solvent is used as the mobile phase in plant paper chromatography?

    <p>Ether-n butyl-alcohol-acetone-distilled water</p> Signup and view all the answers

    Which solvent front process allows pigment movement in paper chromatography?

    <p>Capillary action</p> Signup and view all the answers

    What is the purpose of grinding a small amount of fresh plant sample with distilled water before chromatography?

    <p>To extract organic constituents</p> Signup and view all the answers

    What is the correct procedure for ashing the oven-dried material to obtain gray ash?

    <p>Cool the sample, crush it into small pieces, and put in a clean crucible before heating until gray ash forms</p> Signup and view all the answers

    Which substance is used to produce a white precipitate when testing for Magnesium (Mg) according to the text?

    <p>Saturated ammonium oxalate solution</p> Signup and view all the answers

    What is the purpose of adding 10 mL distilled water and 5 mL diluted nitric acid to ash the sample?

    <p>To dissolve the inorganic constituents</p> Signup and view all the answers

    What should be done after adding 1 mL saturated ammonium oxalate solution when testing for Calcium (Ca)?

    <p>Let stand for 1 minute</p> Signup and view all the answers

    Which activity from the text involves determining moisture, dry matter, and ash contents of plant tissue samples?

    <p>Activity 6: Plant Chemical Analysis</p> Signup and view all the answers

    What is the recommended procedure for obtaining a white precipitate when testing for Magnesium (Mg)?

    <p>Add 5 mL of ash solution to 10% ammonium chloride and dilute ammonium hydroxide, then let stand for 5 mins</p> Signup and view all the answers

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