Multiple choice questions
1. The reason for excessive generation of waste is (a) use & throw policy (b) increased availability of food (b) non utilisation of all components of food (d) increased construction 2. Carnivores represent (a) primary consumers (b) secondary & tertiary consumers (c) Producers (d) autotrophs 3. Amount of energy transferred from one trophic level to the next is (a) 1.5% (b) 15% (c) 90 % (d)10% 4. Which of the following is present in maximum number in an ecosystem (a) herbivores (b) carnivores (c) producers (d) omnivores 5. Organisation involved in formulating programmes for protecting nvironment (a) UNEP (b) WHO (c) UNICEF (c) UNCTAD 6. A food chain always starts with (a) respiration (b) photosynthesis (c) nitrogen fixation (d) decay 7. The second trophic level is always of (a) herbivore (b) omnivore (c) carnivore (d) producer 8. In a forest ecosystem green plants are (a) primary consumers (b) primary producers (c) decomposers (d) heterotrophy 9. A food chain consists of (a) producers & primary consumers (b) producers, herbivores & carnivores (c) producers, consumers & decomposers (d) producers , carnivores & decomposers 10. The driving force of an ecosystem (a) biochemicals (b) biomass (c) solar energy (d) green plants You might also like: 10th Science - Our Environment: Summative assignments View/Read 10th Chapter: Our Environment Questions Paper for FA-III View/Read 10th Science: Chapter: Our Environment HOTS Questions View/Read 10th Chapter: Our Environment: Gist of Lesson View/Read 10th Our Environment CBSE SOLVED GUESS PAPER Download
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