Practice Questions

TLS Online TPP Program

#Question id: 13981

The Transpiration Ratio Measures the Relationship between Water Loss and Carbon Gain, which of the following statements about transpiration ratio is NOT true?

#Unit 6. System Physiology – Plant

The concentration gradient driving water loss is about 50 times larger than that driving the influx of CO2 difference is due to the low concentration of CO2 in air (about 0.03%) and the high concentration of water vapor within the leaf
CO2 diffuses about 1.6 times more slowly through air than water does
The CO2 molecule is larger than H2O and has a larger diffusion coefficient
The concentration gradient driving uptake CO2 is about 50 times larger than that driving the water loss

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TLS Online TPP Program

#Question id: 29552

#Unit 6. System Physiology – Plant

There are statement are given regarding the Plant pathogens groups

a. derive energy from living cells, found on living plant have complex nutrition and do not kill host plants rapidly

b. derive energy from killed cells; they invade and kill plant tissue rapidly and then live saprotrophically on the dead remains

c. initially invading cells that are maintained alive prior to a transition to a necrotrophic life style in which nutrients are obtained from killing host cells

Choose which of the following is correctly defining the groups

TLS Online TPP Program

#Question id: 29562

#Unit 6. System Physiology – Plant

There are some statements are given regarding the Plant pathogens groups

a. derive energy from living cells

b. derive energy from killed cells

c. kill host plant tissue rapidly

d. live saprotrophically on the dead remains

Which of the following is true regarding Necrotrophs

TLS Online TPP Program

#Question id: 29563

#Unit 6. System Physiology – Plant

Biotrophic pathogens and diseases associated with them are given

TLS Online TPP Program

#Question id: 29564

#Unit 6. System Physiology – Plant

Biotrophic fungi usually penetrate the rigid cell wall via the formation of a specialized infection structure on the plant surface called an

TLS Online TPP Program

#Question id: 29565

#Unit 6. System Physiology – Plant

Which of the following is not true regarding Necrotrophs

TLS Online TPP Program

#Question id: 29566

#Unit 6. System Physiology – Plant

Pathogen class, with their Species, along with Effector name, and Effector function are given

a. class - Virus

b. Effector name - P50

c. Effector function - Viral replicase

d. Effector function - Coat protein

Which of the following is true regarding TMV