Intraspecific competition is a competition between members of the same species and is commonly observed in crop plants. Table 6.2 shows the results of a greenhouse experiment which examined the effects of density on the germination and growth of barley. Plants were grown for two weeks in 10- cm diameter pots kept in identical environmental conditions and watered regularly. At the end of the experiment the plants were cropped by cutting the stems at the soil surface. Based from the given table and graph, discuss the data and the relationship of the two factors (Mean wet biomass of plants (g) and Number of plants that germinated). Then, what is the effect of density to the Mean wet biomass of plants?

Intraspecific competition is a competition between members of the same species and is commonly observed in crop plants. Table 6.2 shows the results of a greenhouse experiment which examined the effects of density on the germination and growth of barley. Plants were grown for two weeks in 10- cm diameter pots kept in identical environmental conditions and watered regularly. At the end of the experiment the plants were cropped by cutting the stems at the soil surface. Based from the given table and graph, discuss the data and the relationship of the two factors (Mean wet biomass of plants (g) and Number of plants that germinated). Then, what is the effect of density to the Mean wet biomass of plants?

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter27: Plant Tissues

Section: Chapter Questions

Problem 2DAA: Tree Rings and Droughts El Malpais National Monument, in west central New Mexico, has pockets of...

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Table 1. Average turgor loss point, stem hydraulic conductivity and plant water use efficiency for the two species. Trait Species A Species B Statistics Turgor loss point -2.5 MPa -1.1. MPa p <0.033 Hydraulic conductivity 0.11 Kg mm-1 MPa-1 s-1 0.33 Kg mm-1 MPa-1 s-1 p <0.005 Water use efficiency 80.6 µmol mol-1 47.1 µmol mol-1 p <0.004 Please Describe the data in Table 1
Tree Rings and Droughts El Malpais National Monument, in west central New Mexico, has pockets of vegetation that have been surrounded by lava fields for about 3,000 years, so they have escaped wildfires, grazing animals, agricultural activity, and logging. Henri Grissino-Mayer generated a 2,129-year annual precipitation record using tree ring data from living and dead trees in this park (FIGURE 27.23). FIGURE 27.23 A 2.129-year annual precipitation record inferred from com pled tree ring data in El Malpais National Monument Now Mexico. Data ware averaged over 10-yeer intervals; graph correlates with other indicators of rainfall collected in all parts of North America. PDSI, Palmer Drought Severity Index: O, normal rainfall increasing numbers mean increasing excess of rainfall decreasing numbers mean increasing severity of drought A severe drought contributed to a series of catastrophic dust stem's that turned the rid western United States into a oust bow between 1933 and 1939. 2. One of the worst population catastrophes ever recorded occurred in Mesoamerica between 1519 and 1600 a. d., when around 22 million people native to the region died. Which period between 137 B.C. and 1992 had the most severe drought? How long did that drought last?
Tree Rings and Droughts El Malpais National Monument, in west central New Mexico, has pockets of vegetation that have been surrounded by lava fields for about 3,000 years, so they have escaped wildfires, grazing animals, agricultural activity, and logging. Henri Grissino-Mayer generated a 2,129-year annual precipitation record using tree ring data from living and dead trees in this park (FIGURE 27.23). FIGURE 27.23 A 2.129-year annual precipitation record inferred from com pled tree ring data in El Malpais National Monument Now Mexico. Data ware averaged over 10-yeer intervals; graph correlates with other indicators of rainfall collected in all parts of North America. PDSI, Palmer Drought Severity Index: O, normal rainfall increasing numbers mean increasing excess of rainfall decreasing numbers mean increasing severity of drought A severe drought contributed to a series of catastrophic dust stem's that turned the rid western United States into a oust bow between 1933 and 1939. 1. Around 770 A. D., the Mayan civilization began to suffer a massive population loss, particularly in the southern lowlands of Mesoamerica. The El Malpais tree ring data show a drought during that time. Was it more or less severe than the dust bowl drought?
Asimple tree community consists of 4 maples, 3 oaks, and 1 alder. TheShannon-Wiener diversity of this community is:a.0.42.b.0.97.c.1.5.d. 3.e. notpossible to calculate from the data given.
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The parentheses represent the answer choices for the blank(s). The independent variable is (the amount of light the plants recieve, the amount of chlorophyll in the plant leaves). The dependant variable is (the amount of light the plants recieve, the amount of chlorophyll in the plant leaves).