To draw out inferences for the given questions on the basis of the table that shows the water potential measurements in a 100-meter tall tree and its surroundings, with the gravity force of –0.01 MPa (megapascal) per meter of height above the ground and states the reasons for: (a) Sufficient leaf water potential in order to draw the water to the top of the tree, (b) Continuation of transpiration if the soil potential is decreased to –1.0 MPa, and (c) Effect on water potential of xylem if all the stomata are closed. Introduction: Water potential refers to the relative measurement of the tendency of water to flow along a concentration gradient, that is, from the region of high potential to the lower potential regions. It is caused by osmosis, surface tension, and any physical pressure. It is measured in MPa (megapascals) and represented by the Greek letter “psi” ( Ψ ). The following table represents the region of the plant and the water potential values in these regions: Region Water potential (MPa) Soil water –0.3 Xylem of root –0.6 Xylem of trunk –1.2 Inside of leaf –2.0 Outside air –58.5

Question

Want to see the full answer?

Answer 1

Question

Chapter 34.2, Problem 2R

Summary Introduction

To review:

To draw out inferences for the given questions on the basis of the table that shows the water potential measurements in a 100-meter tall tree and its surroundings, with the gravity force of –0.01 MPa (megapascal) per meter of height above the ground and states the reasons for:

(a) Sufficient leaf water potential in order to draw the water to the top of the tree,

(b) Continuation of transpiration if the soil potential is decreased to –1.0 MPa, and

(c) Effect on water potential of xylem if all the stomata are closed.

Introduction:

Water potential refers to the relative measurement of the tendency of water to flow along a concentration gradient, that is, from the region of high potential to the lower potential regions. It is caused by osmosis, surface tension, and any physical pressure. It is measured in MPa (megapascals) and represented by the Greek letter “psi” (Ψ).

The following table represents the region of the plant and the water potential values in these regions:

Region Water potential (MPa)

Soil water –0.3

Xylem of root –0.6

Xylem of trunk –1.2

Inside of leaf –2.0

Outside air –58.5

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

19. On the diagram below a. Label the three pictures as: DNA; polypeptide; or RNA. b. Label the arrows as: translation or transcription/RNA processing. c. Add the following details to the diagram. Promoter region TATA box Transcription start site Transcription terminator Intron (A,B,C,D) Exons (1,2,3,4,5) Splice sites 5' cap 5' UTR (untranslated region) 3' poly A tail 3' UTR (untranslated region) Translational start (AUG) Translational stop (UGA, UAG, or UAA) N and C ends of polypeptide 0000

Match the letter labels in the figure below to the terms. Some letter labels are not used. MNNNNNNIN M C B A M D F E H K G 8

The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions. 1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction? 2)This staphylococcus aureus grows on human wounds, causing severe infections. You would like to start a clinical trial to treat these wound infections. Please describe: a) What molecule do you recommend for the trial. Why? b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for? 3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale. 4) This pathway is sensitive to bacterial cell density. Describe two separate mutation that would render the pathway active independent of cell density. Briefly explain your rationale. Mutation 1 Mutation 2