Practice Questions

TLS Online TPP Program

#Question id: 11030

While jogging, a person has a stroke volume of 130 ml/beat and a heart rate of 120 beats per minute. If their resting stroke volume was 70 ml/beat and resting heart rate was 60 beats per minute, how did this person's cardiac output change?

#Unit 7. System Physiology – Animal

Their cardiac output did not change. Only their respiratory rate changed.
During exercise, their cardiac output decreased by 11,400 ml/minute.
During exercise, their cardiac output increased by 60 ml/beat.
Their cardiac output increased from 4,200 ml/minute to 15,600 ml/minute after jogging.

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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?

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