Concept explainers
To review:
The experiment was done by the researchers to see the growth of plants with wider girth in warmer areas in Siberian pines (Pinus sibirica) in Tarbagatay pass region in Mongolia. They estimated that the growth of trees is reverse in cooler areas. It was assumed that with the increasing temperature, trees are getting longer and girth is becoming wider. The graphical data was prepared by taking account of the ring widths of the plants and years of growth. The conclusion has to be inferred from the experiment on the basis of the graphical data.
Introduction:
The study of growth rings or annual growth rings that are present in the secondary root xylem is called herbchronology. These rings are mostly present in the perennial herbaceous plants. The annual growth rings are counted and it gives a rough idea about the age of the perennial plant.
Want to see the full answer?
Check out a sample textbook solutionChapter 33 Solutions
Biology: The Dynamic Science (MindTap Course List)
- Why would it be adaptive for subtropical trees to shed their leaves during seasonal periods of drought?arrow_forwardPlease order the following seral stages of a forest: old growth poles opening sapling mature seedlingarrow_forwardIn temperate zones, why do many forest wildflowers carry out most of their annual growth and reproduction in the early spring before the trees produce leaves?arrow_forward
- in mungbean and corn, which species has epigeal seedlings and which has hypogeal seedlings?arrow_forwardWhile camping you notice a "do not litter" sign nailed onto the trunk of a mature oak tree about 7 feet off the ground. When you return five years later, will the sign be at the same height or will the trees growth have raised it?arrow_forwardWhat are the features of red maple that enable it to dominate Mohn Hill Natural Area? features of eastern hemlock to dominate Synder-Middleswarth Natural Area?arrow_forward
- Roscroot (Sedum integrifohum) is an herbaccous plant species that is found on limestone cliffs in southeastern Minnesota and westem New York. and on rocks slopes at high elevations (3,000 m. or - 10.000 At) in Colorado. In Minnesota and New York. the plants are sprawling and have -drooping leaves, whereas in Colorado the plants are erect and hold their caves upright. a. Briefly describe a study that vou could do in order to determine if the differences in plant morphology observed in these populations of roscroot are genetically based or due to environmental factors and describe the results that would allow vou to conclude that it is heritable. (Do not provide a detailed expenmental design.)arrow_forwardWhat selective pressures may have led to the thorny stems of cactus plants and the aboveground roots of mangrove trees?arrow_forwardA barrel cactus that is 60 cm tall and 30 cm in diameter has roots more than 3 m long. However, all the plant’s roots are found in the soil at a depth of 5 to15 cm. What possible adaptive value does such a shallow root system confer on a desert plant?arrow_forward
- PLEASE ANSWER NUMBER 1,2,3, and 4 QUESTIONS: (with brief explanation only) 1. A difference between seedless vascular plants and plants with seeds is that? A. the gametophyte generation is conspicuous in the seedless plants, whereas the sporophyte is dominant in the seeded plants. B. the spore is the agent of dispersal in the first, whereas the seed functions in dispersal in the second. C. the gametophyte is photoautotrophic in seedless plants but dependent on the sporophyte generation in the other group. D. the embryo is unprotected in the seedless plants but retained within the female reproductive structure in the other group. 2. Biologist hypothesize that the first land plants had a low, sprawling growth habitat. Which of the following is part of the logic behind that theory? A. The low sprawling growth gave them greater surface area exposed to light for photosynthesis. B. This was prior to plants’ development of adaptations to defend themselves from predators, so by growing…arrow_forwardusing the terms for common trees oof northeastern Canada, identify the three types of leaves labeled A to Carrow_forwardwhy are Red maple, Chestnut oak, Eastern hemlock common to the two natural areas of mohn mill and snyder-middleswarth? what are the environmental factors that enable them to exist in both areas?arrow_forward
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning