Shell coiling of the snail is maternal effect phenotype control by S gene, where S Dextral is dominant over s sinistral. If snail sinistral coiled shell, which of the following statement is true

#Question id: 11597

#Unit 6. System Physiology – Plant

GA 2-oxidase catalyzing the addition of a hydroxyl group to C-2 by inactivates

#Question id: 11598

#Unit 6. System Physiology – Plant

How the GA3 is differ from GA1______

#Question id: 11599

#Unit 6. System Physiology – Plant

Where the highest levels of gibberellins are found?

#Question id: 11600

#Unit 6. System Physiology – Plant

The first plant gibberellin to be identified was___

#Question id: 11601

#Unit 6. System Physiology – Plant

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 SCF^TIR1 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;

#Question id: 11602

#Unit 6. System Physiology – Plant

The concentration of gibberellins in plants is very low usually 1–10 parts per billion for the _____A_________ in _______B________ and up to 1 part per million of total gibberellins in ______C________.