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Following are some statements for synthesis of secondary metabolites in plants
A. terpenes are synthesized by MEP pathway and mevalonic acid pathway.
A. terpenes are synthesized by MEP pathway and mevalonic acid pathway.
B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway.
C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway.
D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway.
Which one of the following combinations of the above statement is true?
- a)A and D
- b)A, B and C
- c)B and C
- d)B and D
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Following are some statements for synthesis of secondary metabolites i...
Concept:
- By their nature, plants cannot avoid these herbivores and pathogens simply by moving away; they must protect themselves in other ways.
- Their first line of defense involves the plant surface.
- The cuticle (a waxy outer layer) and the periderm (secondary protective tissue).
- A diverse group of plant compounds, commonly referred to as secondary metabolites, also defends plants against a variety of herbivores and pathogenic microbes.
- Some secondary metabolites serve other important functions as well, such as providing structural support, as in the case of lignin, or acting as pigments, as in the case of the anthocyanins.
- They serve as attractants (odor, color, taste) for pollinators and seed-dispersing animals.
Explanation:
Plant secondary metabolites can be divided into three chemically distinct groups:
- terpenes, phenolics, and nitrogen-containing compounds.
Fig 1:The pathways involved in the biosynthesis of secondary metabolites and
their interconnections with primary metabolism.
Statement A:
terpenes are synthesized by MEP pathway and mevalonic acid pathway.- Terpenes are synthesized from primary metabolites in at least two different ways.
- In the well-studied mevalonic acid pathway, three molecules of acetyl-CoA arejoined together stepwise to form mevalonic acid.
- This key six-carbon intermediate is then pyrophosphorylated, decarboxylated, and dehydrated to yield isopentenyl diphosphate (IPP).
- IPP is the activated five-carbon building block of terpenes.
- IPP can also be formed from intermediates of glycolysis or the photosynthetic carbon reduction cycle via a separate set of reactions called the methylerythritol phosphate (MEP) pathway that operates in chloroplasts and other plastids.
- thus this statement is true
Statement B:
alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway.
- A large variety of plant secondary metabolites have nitrogen as part of their structure.
- Included in this category are such well-known antiherbivore defenses as alkaloids and cyanogenic glycosides, which are of considerable interest because of their toxicity to humans as well as their medicinal properties.
- Alkaloids are usually synthesized from one of a few common amino acids—in particular, lysine, tyrosine, or tryptophan.
- However, the carbon skeleton of some alkaloids contains a component derived from the terpene pathway
- thus this statement is true
Statement C:
phenolic compounds are synthesized by shikimic acid pathway and malonic acid pathway.
- Plants produce a large variety of secondary compounds that contain a phenol group: a hydroxyl functional group on an aromatic ring.
- Plant phenolics are synthesized by several different routes and thus constitute a heterogeneous group from a metabolic point of view.
- Two basic pathways are involved: the shikimic acid pathway and the malonic acid pathway.
- thus this statement is not true
Statement D:
both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway.
- Consider the explanation above thus this option is not true
hence the correct answer is option 2
Most Upvoted Answer
Following are some statements for synthesis of secondary metabolites i...
Explanation:
Terpenes:
- Terpenes are synthesized by both the MEP (methylerythritol phosphate) pathway and the mevalonic acid pathway.
Alkaloids:
- Alkaloids are nitrogen-containing compounds synthesized by the shikimic acid pathway.
Phenolic compounds:
- Phenolic compounds are synthesized by both the shikimic acid pathway and the mevalonic acid pathway.
Therefore, the correct combination of statements is A, B, and C, as all three statements are correct in explaining the synthesis of secondary metabolites in plants.
Terpenes:
- Terpenes are synthesized by both the MEP (methylerythritol phosphate) pathway and the mevalonic acid pathway.
Alkaloids:
- Alkaloids are nitrogen-containing compounds synthesized by the shikimic acid pathway.
Phenolic compounds:
- Phenolic compounds are synthesized by both the shikimic acid pathway and the mevalonic acid pathway.
Therefore, the correct combination of statements is A, B, and C, as all three statements are correct in explaining the synthesis of secondary metabolites in plants.
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Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer?
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Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer?.
Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Software Development.
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Here you can find the meaning of Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Following are some statements for synthesis of secondary metabolites in plants A. terpenes are synthesized by MEPpathway and mevalonic acid pathway. B. alkaloids are nitrogen containing compounds and are synthesized by shikimic acid pathway. C. phenolic compounds are synthesized by shikimic acid pathway and mevalonic acid pathway. D. both alkaloids and terpenes are synthesized by mevalonic acid pathway and MEP pathway. Which one of the following combinations of the above statement is true?a)A and Db)A, B and Cc)B and Cd)B and DCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Software Development tests.
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