Fsc Part 2 Biology Online MCQs With Answer-Chapter 25 Ecosystem

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Sr.#	Question	Answer
1	Pinus wallichiana pinus roxbugil Abies pindrow picea smithiana Cederous deodara are plants of	A. Coniferous alpine and boreal forests B. Temperate deciduous forests C. Tropical rain forests D. Grassland ecosystem
2	An association between two organisms by which both are benefited is called.	A. Parasitism B. commensalism C. Mutualism D. Predation
3	The total energy of the sun, trapped by the producer in an ecosystem is about.	A. 20% B. 01% C. 10% D. 30%
4	An association between organisms of different species in which one partner gets benefit and other is harmed.	A. Mutualism B. Symbiosis C. Parasitism D. Commensalsim
5	Study of single population's relationship to its environment is called.	A. Niche B. Autecology C. synecology D. Predation
6	Human appendix, coccyx and nictiating membrane of the eye are:	A. Vestigical organs B. Homologous organs C. Analogous organs D. Embroyonic organs
7	All the food chains begin with.	A. Producers B. Primary consumers C. Secondary consumers D. Decomposers
8	Biome is a	A. Simple community B. Complex community C. Regional community D. Climax community
9	Soilerosion, fire and water percolation down through the soil cause loss of.	A. Sulphates B. Carbonates C. Phosphates D. Nitrates
10	Using the hardin-weinberg principle, which expression represents the frequency of the homo-zygous recessive genotype?	A. p² B. 2p C. q² D. q