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What characteristic is not necessary to consider a nutrient essential?
  • a)
    The element does not grow and develop the body
  • b)
    Element is part of metabolic processes in plant
  • c)
    Another element cannot perform the same function
  • d)
    None of the above
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
What characteristic is not necessary to consider a nutrient essential?...
An essential element is necessary for growth and development of the plant body. Such elements cannot be replaced by other elements as they have a very specific functions required by the plant. Essential elements have contribution in metabolic processes that take place in plant’s body.
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Directions: Read the passages and choose the best answer to each question.PassageA number of different chemical elements are essential for the survival and growth of plants. The macronutrients— those nutrients required in the greatest quantity—are nitrogen, phosphorus, and potassium. These macronutrients are only available in the soil and generally come from the decay of other plants. To enrich the soil and make more of these essential nutrients available, many people use fertilizers to supply plants with the nutrients they need to grow faster. Two botanists discuss whether inorganic or organic fertilizers are most optimal for plant growth.Botanist 1In addition to carbon, hydrogen, and oxygen available in the water and the air, and other micronutrients, such as sulfur, calcium, and magnesium, plants also need the macronutrients nitrogen, phosphorus, and potassium to thrive. The best way to supply the soil, and thus the plants, with the proper macronutrients is to apply organic fertilizers, as opposed to commercial inorganic fertilizers. Organic nutrients include cow, poultry, horse, and sheep manures.Green manure—a crop that is grown for a specific period of time, then plowed and incorporated into the soil—and compost can also be used. Organic fertilization mimics the natural breakdown of organic material into nutrients for which the plants can use. In other words, organic fertilizer provides a naturally slow release of nutrients as the organic material breaks down in the soil, reducing the likelihood of over-fertilization. Organic fertilizers also improve soil structure in the long term and improve the ability of sandy soils to hold water, which is immensely important in arid climates. Commercial inorganic fertilizers, on the other hand, are often applied too heavily, damaging the roots of the plants. Inorganic fertilizers can also cause chemical imbalances in the soil because they can build up a toxic concentration of salts in the soil.Botanist 2Plant growth and survival depends on an adequate supply of essential nutrients that cannot always be found in the soil. Inorganic commercial fertilizers have many benefits over organic fertilizers. The elements in inorganic fertilizers have been thoroughly measured and tested, insuring that each application provides the appropriate amount ofnutrients to the plants, as opposed to the highly variable, and often unknown, nutrient content of organic fertilizers.Organic fertilizers are usually lower in nutrient content than inorganic fertilizers, requiring more of the organic material to be applied to achieve the same level of nutrient delivery acquired from the application of smaller amounts of inorganic material. In addition, characteristics of organic fertilizer require application well in advance of need to ensure that the materials have broken down and can be used by the plant. Inorganic fertilizers, however, once applied, offer immediate availability of nutrients to plants for use.The likelihood of nitrogen depletion is another disadvantage of organic fertilizers. Organic material can cause a temporary depletion of nitrogen in the soil and therefore in the plants that depend on it. Inorganic fertilizer use does not present this problem.Q.Which of the following can be inferred from Botanist 2’s viewpoint about organic fertilizers?

Direction:Read the passages and choose the best answer to each question.PassageNATURAL SCIENCE: Heredity and Gene-linkage: A Possible RelationshipThe ability of every organism on earth to repro-duce is the hallmark of life. Reproduction can be eitherasexual, involving a single parent, or sexual, involvingtwo parents. Sexual reproduction begets offspring that(5)inherit half of their genes from each parent. This trans-mission of genes from one generation to the next iscalled heredity.Each hereditary unit, the gene, contains specificencoded information that translates into an organism’s(10)inherited traits. Inherited traits range from hair color,to height to susceptibility to disease. Genes are actu-ally segments of the DNA molecule, and it is theprecise replication of DNA that produces copies ofgenes that can be passed from parents to offspring.(15)DNA is subdivided into chromosomes that each includehundreds or thousands of genes. The specific traits orcharacteristics of each offspring depend on the arrange-ment and combination of the chromosomes supplied byboth parents.(20)Genes located on the same chromosome tend tobe inherited together. Transmission of these so-calledlinked genes can affect the inheritance of two dif-ferent characteristics. Thomas Hunt Morgan was thefirst biologist to associate specific genes with specific(25)chromosomes. In the early 20th century, Morganselected a species of fruit fly, Drosophila melanogaster,on which to study his genetic theory. The fruit fly is aprolific breeder, producing hundreds of offspring in asingle mating. In addition, the fruit fly has only four(30)pairs of easily distinguishable chromosomes, makingit the ideal experimental organism. Soon after Morgancommenced working with Drosophila, he began tonotice variations in certain traits.For example, Morgan noticed that the natural(35)characteristics of Drosophila included gray bodiesand normal wings. However, mutant examples ofthese characteristics sometimes appeared; these flieshad black bodies, and much smaller, vestigial wings.Morgan crossed female flies that appeared normal, but(40)carried the mutant genes, with males that exhibited themutations. He expected the offspring to include equalnumbers of gray flies with normal wings, black flieswith vestigial wings, gray flies with vestigial wings,and black flies with normal wings. What he found was(45)a disproportionate number of gray flies with normalwings and black flies with vestigial wings, which sug-gested to him that the genes for body color and wingsize are transmitted together from parents to offspringbecause they are located on the same chromosome and(50)must be somehow linked.Additional research conducted by Morgan onD. melanogaster demonstrated that many, often spon-taneous mutations occur across generations. Theseobservations, together with the results of experiments(55)carried out to test his theory on linked genes, ledMorgan to postulate that the location of the genes onthe chromosomes contributes to the likelihood of anygiven gene being transmitted from parent to offspring.This theory of linear arrangement, along with Morgan’s(60)other important contributions to the field of genetics,led to his being awarded the Nobel Prize in Physiologyor Medicine in 1933.Current research exploring the significance oflinked genes reveals that many factors affect the trans-(65)mission of certain traits from parents to offspring. Thelocation of genes on a particular chromosome is but oneof a multitude of determinants involved in whether ornot a characteristic will be inherited.Q.With which of the following statements would the author most likely agree?

Direction:Read the passages and choose the best answer to each question.PassageNATURAL SCIENCE: Heredity and Gene-linkage: A Possible RelationshipThe ability of every organism on earth to repro-duce is the hallmark of life. Reproduction can be eitherasexual, involving a single parent, or sexual, involvingtwo parents. Sexual reproduction begets offspring that(5)inherit half of their genes from each parent. This trans-mission of genes from one generation to the next iscalled heredity.Each hereditary unit, the gene, contains specificencoded information that translates into an organism’s(10)inherited traits. Inherited traits range from hair color,to height to susceptibility to disease. Genes are actu-ally segments of the DNA molecule, and it is theprecise replication of DNA that produces copies ofgenes that can be passed from parents to offspring.(15)DNA is subdivided into chromosomes that each includehundreds or thousands of genes. The specific traits orcharacteristics of each offspring depend on the arrange-ment and combination of the chromosomes supplied byboth parents.(20)Genes located on the same chromosome tend tobe inherited together. Transmission of these so-calledlinked genes can affect the inheritance of two dif-ferent characteristics. Thomas Hunt Morgan was thefirst biologist to associate specific genes with specific(25)chromosomes. In the early 20th century, Morganselected a species of fruit fly, Drosophila melanogaster,on which to study his genetic theory. The fruit fly is aprolific breeder, producing hundreds of offspring in asingle mating. In addition, the fruit fly has only four(30)pairs of easily distinguishable chromosomes, makingit the ideal experimental organism. Soon after Morgancommenced working with Drosophila, he began tonotice variations in certain traits.For example, Morgan noticed that the natural(35)characteristics of Drosophila included gray bodiesand normal wings. However, mutant examples ofthese characteristics sometimes appeared; these flieshad black bodies, and much smaller, vestigial wings.Morgan crossed female flies that appeared normal, but(40)carried the mutant genes, with males that exhibited themutations. He expected the offspring to include equalnumbers of gray flies with normal wings, black flieswith vestigial wings, gray flies with vestigial wings,and black flies with normal wings. What he found was(45)a disproportionate number of gray flies with normalwings and black flies with vestigial wings, which sug-gested to him that the genes for body color and wingsize are transmitted together from parents to offspringbecause they are located on the same chromosome and(50)must be somehow linked.Additional research conducted by Morgan onD. melanogaster demonstrated that many, often spon-taneous mutations occur across generations. Theseobservations, together with the results of experiments(55)carried out to test his theory on linked genes, ledMorgan to postulate that the location of the genes onthe chromosomes contributes to the likelihood of anygiven gene being transmitted from parent to offspring.This theory of linear arrangement, along with Morgan’s(60)other important contributions to the field of genetics,led to his being awarded the Nobel Prize in Physiologyor Medicine in 1933.Current research exploring the significance oflinked genes reveals that many factors affect the trans-(65)mission of certain traits from parents to offspring. Thelocation of genes on a particular chromosome is but oneof a multitude of determinants involved in whether ornot a characteristic will be inherited.Q.The passage states that a hereditary unit is called

Direction:Read the passages and choose the best answer to each question.PassageNATURAL SCIENCE: Heredity and Gene-linkage: A Possible RelationshipThe ability of every organism on earth to repro-duce is the hallmark of life. Reproduction can be eitherasexual, involving a single parent, or sexual, involvingtwo parents. Sexual reproduction begets offspring that(5)inherit half of their genes from each parent. This trans-mission of genes from one generation to the next iscalled heredity.Each hereditary unit, the gene, contains specificencoded information that translates into an organism’s(10)inherited traits. Inherited traits range from hair color,to height to susceptibility to disease. Genes are actu-ally segments of the DNA molecule, and it is theprecise replication of DNA that produces copies ofgenes that can be passed from parents to offspring.(15)DNA is subdivided into chromosomes that each includehundreds or thousands of genes. The specific traits orcharacteristics of each offspring depend on the arrange-ment and combination of the chromosomes supplied byboth parents.(20)Genes located on the same chromosome tend tobe inherited together. Transmission of these so-calledlinked genes can affect the inheritance of two dif-ferent characteristics. Thomas Hunt Morgan was thefirst biologist to associate specific genes with specific(25)chromosomes. In the early 20th century, Morganselected a species of fruit fly, Drosophila melanogaster,on which to study his genetic theory. The fruit fly is aprolific breeder, producing hundreds of offspring in asingle mating. In addition, the fruit fly has only four(30)pairs of easily distinguishable chromosomes, makingit the ideal experimental organism. Soon after Morgancommenced working with Drosophila, he began tonotice variations in certain traits.For example, Morgan noticed that the natural(35)characteristics of Drosophila included gray bodiesand normal wings. However, mutant examples ofthese characteristics sometimes appeared; these flieshad black bodies, and much smaller, vestigial wings.Morgan crossed female flies that appeared normal, but(40)carried the mutant genes, with males that exhibited themutations. He expected the offspring to include equalnumbers of gray flies with normal wings, black flieswith vestigial wings, gray flies with vestigial wings,and black flies with normal wings. What he found was(45)a disproportionate number of gray flies with normalwings and black flies with vestigial wings, which sug-gested to him that the genes for body color and wingsize are transmitted together from parents to offspringbecause they are located on the same chromosome and(50)must be somehow linked.Additional research conducted by Morgan onD. melanogaster demonstrated that many, often spon-taneous mutations occur across generations. Theseobservations, together with the results of experiments(55)carried out to test his theory on linked genes, ledMorgan to postulate that the location of the genes onthe chromosomes contributes to the likelihood of anygiven gene being transmitted from parent to offspring.This theory of linear arrangement, along with Morgan’s(60)other important contributions to the field of genetics,led to his being awarded the Nobel Prize in Physiologyor Medicine in 1933.Current research exploring the significance oflinked genes reveals that many factors affect the trans-(65)mission of certain traits from parents to offspring. Thelocation of genes on a particular chromosome is but oneof a multitude of determinants involved in whether ornot a characteristic will be inherited.Q. What is the main idea of the last paragraph?

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What characteristic is not necessary to consider a nutrient essential?a)The element does not grow and develop the bodyb)Element is part of metabolic processes in plantc)Another element cannot perform the same functiond)None of the aboveCorrect answer is option 'A'. Can you explain this answer?
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What characteristic is not necessary to consider a nutrient essential?a)The element does not grow and develop the bodyb)Element is part of metabolic processes in plantc)Another element cannot perform the same functiond)None of the aboveCorrect answer is option 'A'. Can you explain this answer? for ACT 2025 is part of ACT preparation. The Question and answers have been prepared according to the ACT exam syllabus. Information about What characteristic is not necessary to consider a nutrient essential?a)The element does not grow and develop the bodyb)Element is part of metabolic processes in plantc)Another element cannot perform the same functiond)None of the aboveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for ACT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What characteristic is not necessary to consider a nutrient essential?a)The element does not grow and develop the bodyb)Element is part of metabolic processes in plantc)Another element cannot perform the same functiond)None of the aboveCorrect answer is option 'A'. Can you explain this answer?.
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