#Question id: 10792
#Unit 6. System Physiology – Plant
Compounds such as caffeic acid and ferulic acid occur in soil in appreciable amounts and have been shown,
#Question id: 10793
#Unit 6. System Physiology – Plant
Hydroxyl groups (−OH), and methoxy groups(−OCH3) modification provides colour variations in case of
#Question id: 10794
#Unit 6. System Physiology – Plant
Which one of the following characteristics of about lignin is incorrect?
#Question id: 10795
#Unit 6. System Physiology – Plant
basic carbon skeleton of a flavonoid contains 15 carbons arranged in two aromatic rings connected by a three-carbon bridge. This structure results from two separate biosynthetic pathways:
#Question id: 10796
#Unit 6. System Physiology – Plant
Flavonoids are one of the largest classes of plant
phenolics, structure of flavonoids;
#Question id: 10797
#Unit 6. System Physiology – Plant
The colored pigments of plants are of two principal types: carotenoids and flavonoids. Given below some statements of about these pigments;
a) Anthocyanins
are colored flavonoids that attract animals
b) Flavonoids are phenolic compounds that include a
wide range of colored substances
c) Carotenoids are coloured terpenoid compounds that
also serve as accessory pigments in photosynthesis
d) most widespread group of pigmented carotenoids is
the anthocyanins, these are glycosides that have sugars. Without their sugars,
anthocyanins are known as anthocyanidins
Which of the following is incorrect statements of these pigments;