B. Instruction: Fill out the following blanks with the correct word/s to complete a statement.
1. The variety of life present in an ecosystem is called ________________________.
2. The series of changes in an ecosystem to create a community in a previously uninhabited area
refers as ______________________.
3. ________________________ is the interaction between different organisms in an ecosystem
4. A community of organism which involves the interaction of living things with non-living
things is called ___________________.
5. a term describing any relationship or interaction between two dissimilar organisms
6. Primary succession is a very slow type of ecological succession which occurs in areas with no
__________________.
7. ____________________ is a never ending process of ecological succession because there is already soil.
8. __________________ biodiversity refers to the variation in genes that exist within species
9. __________________ biodiversity is the number of species that are present in a region
10. The natural communities and habitats of organism is ____________________ biodiversity.
Answers
Answer:
1) biodiversity 2) ecological succession 3) please ask correct question 4) ecosystem 5) symbiosis ( 6 & 7 ) see explanation for correct answer
Explanation:
2) Ecological succession is the sequence of biotic changes that restore a damaged community or create a community in a previously uninhabited area.
3) There are four main types of species interactions that occur between organisms in an ecosystem: Predation, parasitism and herbivory - In these interactions, one organism benefits while the other is negatively affected. * Competition - Both organisms are negatively affected in some way due to their interactions.
4) An ecosystem consists of all the living things and nonliving things interacting in the same area.
5)Symbiosis is a term describing any relationship or interaction between two dissimilar organisms.
6)The process of change in ecological community of an area over time which in turn results in the formation of climax community is termed as succession. The direction and predictable change in the community lead to alteration of the environment. Now the changing environment leads to altered species composition and structure. it can occur on a bare land (primary succession) or in the area where vegetation was removed by any climatic or anthropogenic factor (secondary succession). It is a long and slow but dynamic process in which changes in climatic conditions can reverse the plant types. Any natural or anthropogenic calamity can further hinder or increase its rate. For example, flooding, fire, deforestation can damage the existing vegetation and need the process to start again.
7) 1.
Progressive (dynamically changing in the directions of increasing species diversity, structural complexity, greater biomass, and increased stability) or retrogressive (in the opposite directions)
2.
Autotrophic (generating energy from internal processes) or heterotrophic (dependent on already fixed energy, such as the successional of communities associated with decomposition of dead logs)
3.
Autogenic (changing due to interactions from inside the system) or allogenic (changing in response to changes in external variables)
Ecological succession is an early concept in ecology and was essential in the early definitions of ecological communities. Although the basic concepts of succession are easily understood, debates about succession (Box 1) have spawned considerable confusion and discussion. The mechanisms that drive ecological succession and its very existence as a natural phenomenon have been the subject of continual debate among ecologists. McIntosh (1985) identifies two contrasting views that typify traditional natural history and also can be found in current discussions of theoretical ecology. This dichotomy, which can be used to organize theories about ecological succession, contrasts mechanistic explanations and organic (holistic) explanations of the causes of succession. For mechanistic theories about succession, known laws explain the actions of the individual parts of a system and the whole system is the sum of these parts and their interactions. In the case of organic or holistic explanations, the whole system, its existence and design, explains the actions of the parts. Mechanistic explanations often are taken as the more modern interpretation of succession, but these “modern” views may have been the first developed and certainly developed as early as the organic views. Organic explanations of succession were most popular, at least in the United States, between the 1920s and early 1950s and have had a considerable impact on land use and conservation policies.
8)