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Aem 102:Agroecology Question Paper

Aem 102:Agroecology 

Course:Management Of Agroecosystems And Environment

Institution: University Of Nairobi question papers

Exam Year:2015



1.(a)Differentiate between the terms below as used in ecology(10 mks)
(I) auto trophic and hetero trophic components of the environment
(ii)realized niche and fundamental niche
(iii)factor compensation and acclimatization
(iv)ecotone and ecotypes
(v) species richness and abundance
(vi)ecology and ecosystem

(b)using a well labelled diagram,explain the relationship between species richness and abundance(7mks)

(c)state the advantage of determining species diversity in ecosystem(3mks)

Q2. (a) state Liebig''s law of minimum and Shelford''s law of tolerance (4mks)
(b)explain subsidiary principles that complement Shelford''s law of tolerance(6mks)
Q3 . (a) Define the term population(2mks)
(b)Discuss the various characteristics of a population that are unique to the group but are not characteristics of individuals in that group (10 mks)
(c)Dispersion is the spatial pattern of individuals in a population relative to one another.discuss the various types of dispersion typical in an ecosystem (8mks)
(d)Use a well labelled diagram to describe three survivorship curves common in a population(6mks)




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