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TLS Online TPP Program

#Question id: 12527

Which of the following is the incorrect prediction about ABA translocation in vascular tissue by both the xylem and the phloem?

#Unit 6. System Physiology – Plant
  1. ABA synthesized in the roots can also be transported to the shoot via the xylem
  2. the concentration of ABA in the xylem sap of well-watered sunflower plants is between 1.0 and 15.0 nM, while in in waterstressed plants increases to as much as 3000 nM (3.0 µM )
  3. Concentration of 15.0 nM ABA in the apoplast is sufficient to close stomata, all of the ABA in the xylem stream reaches the guard cells
  4. ABA also is transported in a conjugated form, then released by hydrolysis in leaves.
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TLS Online TPP Program

#Question id: 22975

#Unit 7. System Physiology – Animal

1,25-dihydroxycholecalciferol stimulates the,
a. Secretion of phosphate ions from kidney
b. Secretion of calcium from kidney
c. Reabsorption of calcium from kidney
d. Reabsorption of phosphate ions from kidney
TLS Online TPP Program

#Question id: 10878

#Unit 7. System Physiology – Animal

The resistance of the pulmonary tree is so low that a 1 cm of water pressure gradient is sufficient to cause normal air flow during resting conditions. Which of the following often has a substantial resistance during pulmonary disease states that can limit alveolar ventilation?
TLS Online TPP Program

#Question id: 23844

#Unit 2. Cellular Organization

Thin-filament regulation is,
TLS Online TPP Program

#Question id: 26957

#Unit 10. Ecological Principles

What will have not the drawbacks of Mark-recapture technique ?
TLS Online TPP Program

#Question id: 11481

#Unit 7. System Physiology – Animal

Which of the following sensory receptors is correctly paired with its category?