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2013 Jiangsu Education Biological Compulsory 3 Chapter 4 Section 2 (1) Knowledgeable Exercise Lightly Won the Championship
1. The following statements are correct () A. When the wolf eats a rabbit, it gets all the energy of the rabbit. When the wolf preys on the rabbit and synthesizes its own organic matter through assimilation, energy flows from the first nutritional level into the second nutritional level. When producers produce organic matter through photosynthesis, energy flows from the abiotic environment into the biome D. The energy flow of the ecosystem is the analysis of the reciprocating cycle: choose C. When a wolf eats a rabbit, it can't get all the energy of the rabbit. For example, the energy in the rabbit's bones and hair cannot be assimilated. The wolf preys on the rabbit, and the wolf does not belong to the second trophic level. The energy flow of the ecosystem cannot be circulated. 2. The material cycle of the ecosystem refers to the basic elements that make up the organism () A. Complex processes of material circulation and energy flow in terrestrial ecosystems B. The whole process of decreasing energy level as the energy flows through each trophic level of the ecosystem C. Repetitive circulatory movement in the organisms in the biomes that make up the ecosystem D. Repetitive cyclic movement between the biome of the biosphere and the inorganic environment