Practice Questions

TLS Online TPP Program

#Question id: 12580

When levels of CO2 are experimentally increased, C3 plants generally respond with a greater increase in productivity than C4 plants. This is because

#Unit 10. Ecological Principles

C plants are more efficient in their use of CO2
C plants are able to obtain the same amount of CO2 by keeping their stomata open for shorter periods of time.
C4 plants don’t use CO2 as their source of carbon.
C3 plants are more limited than C4 plants by CO2 availability because of transpirational water loss.

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TLS Online TPP Program

#Question id: 12668

#Unit 6. System Physiology – Plant

What will be the effect of water deficit condition in the plant cell?

TLS Online TPP Program

#Question id: 12669

#Unit 6. System Physiology – Plant

Water potential of plants under various growing conditions, and sensitivity of various physiological processes to water potential, during water potential 0→ -1 MPa, which of the following physiological condition will not be seen ;

TLS Online TPP Program

#Question id: 12670

#Unit 6. System Physiology – Plant

Changement in the physiology or morphology of the individual is a nonpermanent or temporary and that can be reversed if the prevailing environmental conditions change is termed as

TLS Online TPP Program

#Question id: 12671

#Unit 6. System Physiology – Plant

When genetic changes in an entire plant population have been fixed over many generations by selective environmental pressure, those changes are referred to as,

TLS Online TPP Program

#Question id: 12711

#Unit 6. System Physiology – Plant

Various sensors monitor ROS levels in cells; an increase in ROS activates a signal transduction network. ROS scavenging is carried out by antioxidant molecules ____X_________and by antioxidant enzymes such as____Z_________

TLS Online TPP Program

#Question id: 12713

#Unit 6. System Physiology – Plant

Following are certain statements related to plants water deficit condition;

a) Inhibits Leaf Abscission

b) Enhances Root Extension into Deeper, Moist Soil

c) Limits Photosynthesis within the Chloroplast

d) decreases Resistance to Liquid-Phase Water Flow

e) Increases Wax Deposition on the Leaf Surface

f) Alters Energy Dissipation from Leaves

Which of the following combination given statements is correct