Question 11 Mark…………. is flow in form of food in an ecosystem.AnswerEnergyView full question & answer→
Question 21 Mark$UV$ radiation can cause ……… cancer in human beings. (skin, blood, muscle)AnswerskinView full question & answer→
Question 31 MarkA problem of ......... is due to entry of non-biodegradable substance. (non biological magnibication, biological magnification, none)Answerbiological magnificationView full question & answer→
Question 41 MarkMain energy source in an ecosystem is ……….. (moon, earth, Sun)AnswerSunView full question & answer→
Question 51 MarkSolar energy is transformed into ……….. by chlorophyllous organisms. (electric energy, chemical energy, potential energy)Answerchemical energyView full question & answer→
Question 61 MarkFood chain ends with ......... organisms from where simple inorganic substances return back to the soil. (producer, consumer, decomposers)AnswerdecomposersView full question & answer→
Question 71 MarkAll animals are ……….. in food chain. (producer, consumers, decomposer)AnswerconsumersView full question & answer→
Question 81 MarkA parasite is in the class of ......... category. (consumer, producer, decomposer)AnswerconsumerView full question & answer→
Question 91 MarkFarm and garden are …………. ecosystem. (natural, synthesis, artificial)AnswerartificialView full question & answer→
Question 101 MarkUse of ......... chemical is hazardous for ozone layer.$ (HFC, CFC, NFC)$Answer$CFC$View full question & answer→
Question 111 Mark……….. is formed by interaction between biotic community and abiotic factors. (environment, earth, Ecosystem)AnswerEcosystemView full question & answer→
Question 121 MarkWaste substances that are broken down by microbes are called ……… (non biodegradable, renewable, biodegradable)AnswerbiodegradableView full question & answer→