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- Capillary action allows water to flow through plants. Capillary is possible due to what property of water? (A) Polarity(B) Cohesion(C) Neutral pH(D) Surface tensionFigure 31.7 Which horizon is considered the topsoil, and which is considered the subsoil?Figure 31.6 Soil compaction can result when soil is compressed by heavy machinery or even foot traffic. How might this compaction change the soil composition?
- When comparing vessel elements with sieve tube elements, only vessel elements. Select one: a. are stacked end to end. b. None of the choices. c. are present in all plant organs. d. transport substances through the plant. e. are not living.Vascular tissues occur in which of the following plant organs? a. Stems b. Roots c. Leaves d. All of the AboveWhich three soil colours would suggest the following conditions in the soil 1. Poor drainage 2. Reduced compounds of manganese 3. Well drained and aeration soil
- When comparing vessel elements with sieve tube elements, only vessel elements…Mass flow occurs when; a. Soil temperatures change, thereby changing molecular motion. b. Atmospheric pressures change c. Plant roots extract water and air flows into empty pores d. The soil is being flooded e. all of the aboveWhich the following statement is FALSE:?a. Relative water content is not a very sensitive index because leaves can show strong responses to <2% change in RWCb. Relative water content is not a very sensitive index because it gives no information about the forces for water movementc. Relative water content is equal the ratio of the mass of water in a given leaf over the mass of water when that leaf was fully saturatedd. Relative water content is equal the ratio of the mass of water in a dry leaf over the mass of water when that leaf was fully saturated
- 2. A learner carried out an experiment on water loss from leaves. The learner wanted to find out which surface of a leave loses more water. He set up the following experiment. Leaf 1 has no vaseline,leaf2 vaseline covering lower surface,leaf3 vaseline covering upper surface. The learner weighed each leaf at the start and hung them on the line. He weighed them again after 24 hours. When water is lost from a leaf the mass of the leaf decreases. The table shows the percentage decrease in mass of the three leaves after 24 hours. 2.1Use the equation to calculate the percentage decrease in mass of leaf Show all your working. 2.2 The percentage decrease in mass is used to compare the results. Explain why. 2.3 The learner did not put vaseline on either surface of leaf 1. What was the purpose of of leaf 1? 2.4 The learner covered the lower surface of leaf 2 with vaseline. Suggest why leaf 2 had the smallest percentage decreae in mass.in plants , water is transported through vessels called xylem gravity and move water to their upper tissues ? The cohesiveness of water molecules allows them to travel up the walls of the vessel However , for most plants this is not enough to move the water all the way to the top of the plant How do plants overcome the force ANSWER CHOICES ARE IN THE PHOTO. thanks."Plants, just like any organism, have evolved structures to solve the challenges of life. Plants need to transport water from the ground to the leaves for _________"I feel like that's a vague question and I don't understand it!