TLS Online TPP Program

#Question id: 13231


The transmembrane pathway is the route followed by water in which

#Unit 6. System Physiology – Plant
  1. water moves exclusively through the cell wall without crossing any membranes
  2. water travels from one cell to the next via the plasmodesmata, the entire network of cell cytoplasm interconnected by plasmodesmata
  3. water enters a cell in this pathway by passing a single membrane  for each cell in its path
  4. enters a cell on one side, exits the cell on the other side, enters the next in the series and so on.In this pathway, water crosses at least two membranes for each cell in its path
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TLS Online TPP Program

#Question id: 10496

#Unit 6. System Physiology – Plant

Blue light–stimulated stomatal opening is abolished by green light in the 500 to 600 nm region of the spectrum,what are these alphabet showing in the graph?

TLS Online TPP Program

#Question id: 10495

#Unit 6. System Physiology – Plant

Guard cells have different mechanisms mediating responses to blue light. The npq1 mutant has a lesion in the enzyme that covert violaxanthin to zeaxanthin. What will causes if the npq1 mutant?

TLS Online TPP Program

#Question id: 10494

#Unit 6. System Physiology – Plant

Sucrose is an osmotically active solute in guard cells, One implication of these osmoregulatory features is that stomatal opening & closing is associated with which of the following given statements?

TLS Online TPP Program

#Question id: 10493

#Unit 6. System Physiology – Plant

Which wavelength modulates guard cell osmoregulation by means of its activation of proton pumping, solute uptake, and stimulation of the synthesis of organic solutes;

TLS Online TPP Program

#Question id: 10491

#Unit 6. System Physiology – Plant

Acidification of the lumen stimulates zeaxanthin formation, and alkalinization favors violaxanthin formation. Lumen pH depends on photosynthetic photon flux density, most effective at

TLS Online TPP Program

#Question id: 10490

#Unit 6. System Physiology – Plant

Which of the following is a correct Match of the stomatal opening and closing mechanism;

COLUMN ACOLUMN B
P- Opening of Stomatai) Chloride anions are taken up into the guard cells from the apoplast
Q- Closing of stomataii) The malate content of guard cells decreases
iii) starch content in guard cells increases during end of the
iv) Acidification of the lumen stimulates zeaxanthin formation which activates the H+ ATPase causing
v) Accumulation of solute in vacuole such as sucrose and malate leads to