Which area shows the climax community of secondary succession?

Biology

2 answers:

Stolb23 [73]3 years ago

5 0

Usually the place with the most stable community
(ex: Tall growing trees, plants that live a long time)

GuDViN [60]3 years ago

3 0

Secondary succession refers to the series of community variations that occurs on a previously colonized but damaged or disturbed habitat. The examples include the regions that have been cleared of prevailing vegetation, like after tree-felling in a woodland and destructive occurrences like fires.

A climax community is an ecological community in which populations of animals or plants remain stable and prevail in equilibrium with each other and their surroundings. A climax community refers to the ultimate phase of succession, remaining comparatively unchanged until destructed by an incident like human interference or fire.

Thus, the stable state of vegetation development in a region with time during secondary succession signifies climax community.

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<h2>Given statement is false</h2>

Explanation:

According to dispersive model of DNA replication,DNA molecules are hybrids of parental and daughter DNA;In this model each individual strand is a combination of original and new DNA

Meselson and Stahl did an experiment on DNA replication using E.coli bacteria

E.coli was grown in a medium containing heavy isotope of nitrogen,bacteria took up the nitrogen and used to synthesize new biological molecules,including DNA
It was grown for many generations,the nitrogenous bases of the bacteria's DNA were all labelled with heavy nitrogen
Bacteria were then switched to light nitrogen isotope and allowed to grow for several generations
They then measured the density of the DNA using density gradient centrifugation
This method separates molecules such as DNA into bands by spinning them at high speeds in the presence of another molecule, such as cesium chloride
Each DNA produced two DNA molecules each with one new strand and one old strand called semi conservative replication(half of the parental DNA conserved in daughter DNA)
Each DNA strand act as a template for synthesis of new strand
Hence,dispersive model of DNA was eliminated and semi-conservative model of DNA replication was proved by the above experiment