Multiple Choice Questions (MCQs) The maximum percentage of energy changed into food is: (a) 10% (b) 20 (c) 30 (d) 5 Percentage of energy absorbed in atmosphere is: (a) 50 (b) 60 (c) 57 (d) 70 Which of the following is not tertiary consumer?
MODEL SUBJECTIVE QUESTIONS: What is ecosystem? Give its components. Give physiognomic characteristics. Write note on ecological energetics. Write note food chain, food web and trophic levels. Write note on ecological pyramids. Describe nitrogen cycle. Describe hydrological cycle. SHORT QUESTIONS: 1. What are consumers?
TERMS DEFINITIONS Ecosystem A community with its non-living environment is called ecosystem. Decomposers The microorganisms which decompose the bodies of dead animals and plants are called decomposes. Ecological energetic The flow of energy through an ecosystem is called ecological energetic. Productivity The rate at
A community with its non-king environment is called ecosystem. Odum, E.P. ( 1959) defines ecosystem as an area of nature, that includes living organism and nonliving substances, interacting to produce an exchange of materials between the living and nonliving parts. Non-living environment provides energy