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TLS Online TPP Program
#Question id: 12526
#Unit 6. System Physiology – Plant
ABA is transported by both the xylem and the phloem, but it is normally much more abundant in ___
TLS Online TPP Program
#Question id: 12527
#Unit 6. System Physiology – Plant
Which of the following is the incorrect prediction about ABA translocation in vascular tissue by both the xylem and the phloem?
TLS Online TPP Program
#Question id: 12528
#Unit 6. System Physiology – Plant
According to a recent model, the balance between the activities of ABA and gibberellin in seeds is under both developmental and environmental control such as
a) early stages of seed development, ABA sensitivity is high and gibberellin sensitivity is low, which favors dormancy over germination
b) Later in seed development, ABA sensitivity declines and gibberellin sensitivity increases, favoring germination.
c) Environmental factors such as temperature and light affect the ABA:GA ratios by activation of the NCED and GA2ox enzyme, which promotes seed dormancy
d) During an Ambient environment, activation of GA3ox and CYP707A2 inducing dormancy
Which of the following combination from the above statements is incorrect?
TLS Online TPP Program
#Question id: 12529
#Unit 6. System Physiology – Plant
During the mid- to late stages of seed development, specific mRNAs accumulate in embryos, These mRNAs encode so-called late-embryogenesis-abundant (LEA) proteins thought to be involved in desiccation tolerance. This mRNA accumulation in embryo at the time of high levels of which endogenous hormone?
TLS Online TPP Program
#Question id: 12530
#Unit 6. System Physiology – Plant
Some given hormones is also called a ubiquitous hormone?
a) Ethylene
b) Gibberellin
c) Abscisic acid
d) Brassinosteroids
TLS Online TPP Program
#Question id: 12531
#Unit 6. System Physiology – Plant
The most bioactive brassin in eudicots, which is a polyhydroxylated steroid similar to animal steroid hormones that brassin is