2.5 points What is a plant association? A relationship between two plants that benefits one or both. A random group of plant species growing in one place. A group of plant species found to live together in a predictable way (dominarice, proportion, ete.). 2.5 pointis Through their wark, early "phytosociologists" recognired that. subjective selections of vegetation were more revealing than techniques of random census. they could achieve more by workine together. plant associations reflected pliysical clanges in the land (temperature, futrients, fooisture, etc). there was very little order to assoclations. 2.5 pesints Robert Whattaker of Cornell founded the idea of "gradient analysis" with which he assumed that . there are always sharp borders between recognizabie plant associations. plant asspciations are organized according to fractal mathematical principles. plant communities were primar ily randemly assembled. plant communities are gradually blending into each other.2.5 points When it was recognized that plants (and animals) tive in recognizable assemblies in an area with a given set of ervironmental factors, many terms were coined for theve hrssemblies. We must thank the British botanist Sir Arthur Tansicy for the one that stuck and is used widely today. Which one is it? biotic districts holocene biogeocenose ecosystem naturcomplex biocheres:.

1. 2.5 points What is a plant association? A relationship between two plants that benefits one or both.
A random group of plant species growing in one place. A group of plant species found to live
together in a predictable way (dominarice, proportion, ete.). 2.5 pointis Through their wark, early
"phytosociologists" recognired that. subjective selections of vegetation were more revealing than
techniques of random census. they could achieve more by workine together. plant associations
reflected pliysical clanges in the land (temperature, futrients, fooisture, etc). there was very little
order to assoclations. 2.5 pesints Robert Whattaker of Cornell founded the idea of "gradient
analysis" with which he assumed that . there are always sharp borders between recognizabie
plant associations. plant asspciations are organized according to fractal mathematical principles.
plant communities were primar ily randemly assembled. plant communities are gradually blending
into each other.2.5 points When it was recognized that plants (and animals) tive in recognizable
assemblies in an area with a given set of ervironmental factors, many terms were coined for theve
hrssemblies. We must thank the British botanist Sir Arthur Tansicy for the one that stuck and is
used widely today. Which one is it? biotic districts holocene biogeocenose ecosystem
naturcomplex biocheres: