#Question id: 4911
#SCPH28 | Zoology
Neutral petite mutations:
#Question id: 27780
#Research Methodology
#Question id: 18837
#SCPH01 Biochemistry
#Question id: 10798
#I Life Science/ Life Sciences Group – I-V
Two other major groups of flavonoids found in flowers
and leaves of all green plants. The function of these two flavonoids in plants
are____
a) protect plants against being eaten by herbivores
and against being infected by microbial pathogens
b)
Protect cells from excessive UV-B radiation (280–320 nm) because they
accumulate in the epidermal layers of leaves and stems and absorb light
strongly in the UV-B region
c)
flavones and flavonols secreted into the soil by legume roots mediate the
interaction of legumes and nitrogen-fixing symbionts
d) They are are coloured terpenoid compounds that also
serve as accessory pigments in photosynthesis
Which of the following combination from the above statements is correct?
#Question id: 11601
#I Life Science/ Life Sciences Group – I-V
Gibberellin is an important plant hormone that regulates
several aspects of plant growth and development. Some statements are given
below in relation to signalling
pathways:
a) The binding of gibberellin (GA) to its receptor leads to
the degradation of the DELLA repressor by the 26S proteasome
b) Gibberellin binds to the GID1 receptor and induces a
conformational change in the N-terminal domain of the receptor, allowing the
receptor to interact with the TVHYNP and DELLA domains of the DELLA repressor
c) The formation of the GID1-repressor complex promotes the
interaction between the repressor and the E3 ubiquitin ligase SCFTIR1 complex,
leading to the ubiquitination and degradation
d) The gibberellin receptor GIBBERELLIN INSENSITIVE DWARF 1
(GID1) also itself function as an F-box protein
Which one of the following is the incorrect statements about GA signalling pathway;