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

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Sr.#	Question	Answer
1	Similarity in characteristics resulting from common ancestry is known as:	A. Analogy B. Homology C. Evolutionary relationship D. Phylogeny
2	Soilerosion, fire and water percolation down through the soil cause loss of.	A. Sulphates B. Carbonates C. Phosphates D. Nitrates
3	The perennial plants are bushes or cacti with large shallow root systems in	A. Grassland B. Deserts C. Tundra D. Taiga
4	The whole of the world land is called.	A. Lithosphere B. Hydrosphere C. Ecosphere D. Biosphere
5	The remoras benefit from this relationship the shark is not affected at all	A. Symbiosis B. Mycorrhiza C. Commensalism D. Mutualism
6	Annual rain fall in deserts is less than	A. 25 to 50 cm B. 10 to 22 cm C. 15 - 25 cm D. 20 to 40 cm
7	All the food chains begin with.	A. Producers B. Primary consumers C. Secondary consumers D. Decomposers
8	Which one of the following would cause the hardy-weinberg principle to be inacurate?	A. The size of the population is very large. B. Individual mate with one another at random C. Natural selection is present D. There is no source of new copies of alleles from outside the population
9	In each case succession is initiated by a few hardy invaders called.	A. Starters B. Pioneers C. Decomposers D. Climax community
10	The animal that is caought and eaten is called.	A. Prey B. Parasite C. Predator D. Host