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- A. Most varieties of Sedum are not native plants in Albany or New York City. Why may it be dangerous to introduce a new species to an established ecosystem?B. How does a green roof reduces the amount of carbon dioxide in the atmosphere?C. Why is it important to reduce the amount of carbon dioxide in the atmosphere?D. State one disadvantage of a green roof. E. What are other ways the owners or architects of a building can reduce its carbon footprint?Explain the mechanisms for which the leaf water potential would be more negative at midday than at pre-dawn. Figure 2. Pre-dawn and midday leaf water potential (Ψleaf) for the two species at different dates throughout the year.If New York experiences drought conditions during April, May, and June 2022, how would you expect local tree rings to differ compared to rings made in 2021 (which had normal rainfall)? Early wood cells would be larger in 2022, creating thicker rings Late wood cells would be larger in 2022, creating thicker rings Early wood cells would be smaller in 2022, creating thinner rings Late wood cells would be smaller in 2022, creating thinner rings Rings would be similar both years as water amount has little effect during spring and early summer
- In the northern forests of Siberia, a tall tree is most likely a: a. conifer b. cycad c. Ginkgo biloba d. gnetophyteMatch each adaptation to the environment it evolved in. Question 15 options: Desert Nutrient poor soils Wetlands Animal predation 1. Stomata on the upper sides of leaves. 2. The ability to trap and digest animal protein. 3. Thickened stems and extensive root systems. 4. Thorny growths and trichomesA coniferous tree A. bears leaves B. sheds leaves annually C. has cones and needles D. changes with the season
- Desert plants have the following characteristics that help them adapt to the desert climate, except which one? a. Reduced or no leaves O b. Dropping leaves during dry season O C. Perennials undergo a rapid life cycle d. Stems serving as water storage O e. Alternative carbon-fixing pathwaysWhich of the following statements is CORRECT?Aquaporins:a. play an active role in the regulation of water movement in the xylem during mild droughtb. are proteins embedded in the cell walls that transport waterc. play an active role in the regulation of water movement outside the xylem during mild droughtd. are proteins embedded in the mesophyll and bundle sheath apoplast that transport waterWhich of the following is most likely to be found in a desert environment? a. broad leaves to capture sunlight b. spines instead of leaves c. needle-like leaves d. wide, flat leaves that can float
- The figure below shows the degree of stomatal opening in three plant species during the course of a single 24-hour day. Comparing Species A and Species B in the figure above, which statement below is correct? Species A and Species B are similar at preventing water lost by transpiration Species A is better at preventing water lost by transpiration Species B is better at preventing water lost by transpirationA tropism in response to seasonal changes is associated with a. heliotropism b. phototropism c. photoperiodism d. thigmotropismPlants vary widely in how they allocate biomass to roots, leaves and stems. Two key measures of plant allocation in an ecosystem context are leaf area index (LAI) and the root to shoot ratio. a) Define each of these measures and discuss how variation in each measure can influence net primary production (NPP). b) Pick one of the measures and discuss how and why you would expect it to vary in relation to an abiotic factor of your choice. Underline the abiotic factor you choose.