Following statements are regarding to cancer stem cell (CSCs).

a. A representative subpopulation of cancer cells with peculiar molecular aspects that resemble some of those typical of normal stem cells.

b. These cells are capable of replenishing the repertoire of identical cancer cells.

c. These cells cannot create heterogeneous progeny that differentiate into more mature cells.

d. These cells show extraordinary proliferative potential.

e. These cells show excessive programmed cell death.

Which of the following combination is correct?

TLS Online TPP Program

#Question id: 13233

#Unit 6. System Physiology – Plant

Tracheids are

TLS Online TPP Program

#Question id: 13234

#Unit 6. System Physiology – Plant

Some roots can develop positive hydrostatic pressure in their xylem is called

TLS Online TPP Program

#Question id: 13235

#Unit 6. System Physiology – Plant

Few statements regarding water potential of soil

a) The osmotic potential (Ys) of soil water is generally negligible because solute concentrations are low

b) In wet soils the Hydrostatic pressure (Yp) of soil water is close to zero

c) In dry soils the Hydrostatic pressure (Yp) of soil water is negligible

d) ) The osmotic potential (Ys) of soil water is generally positive because solute concentrations are low

 Which one of the following combination of above statements is TRUE?

TLS Online TPP Program

#Question id: 13551

#Unit 6. System Physiology – Plant

As water is lost to the air, the surface of the remaining water is drawn into the interstices of the cell wall, where it forms curved air–water interfaces

TLS Online TPP Program

#Question id: 13552

#Unit 6. System Physiology – Plant

Transpiration from the leaf depends on two major factors;

TLS Online TPP Program

#Question id: 13553

#Unit 6. System Physiology – Plant

According this graph which statements is most appropriate ;

a) The air surrounding the leaf is very still, the layer of unstirred air on the surface of the leaf may be so thick that it is the primary deterrent to water vapor loss from the leaf   

b) The air surrounding the leaf is very still, reduces the thickness of the boundary layer at the leaf surface, reducing the resistance of this layer

c) The moving air reduces the thickness of the boundary layer at the leaf surface, reducing the resistance of this layer    

d) The moving air, the layer of unstirred air on the surface of the leaf may be so thick that it is the primary deterrent to water vapor loss from the leaf