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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Ecosystem Set 1
Q1 | What does following diagram indicate ?
- Declining Population
- Constant declining Population
- Increasing Population
- Stable Population
Q2 | Which option is not correct for the given diagram ?
- It indicate decreasing population stable
- It indicate stable population
- The post-population age group people are more in number
- The death rate is higher than birth rate
Q3 | A Snake feed on frog, the hawk feed on this snake. What is the place of snake in foodchain?
- producer
- primary consumer
- secondary consumer
- Tertiary consumer
Q4 | What is correct for the given diagram?
- Pre- re productire group people are more in number
- Post-re productive group people are more in number
- Post-re productive group people are more less
- In it-pre productive and post reproductive age- group are placed respectively.
Q5 | Orchid living on the tree is an example of ..............?
- Parasitic
- Predetor
- Commensalism
- Mutualism
Q6 | Population of which of the following will be highest in the foodchain?
- Decomposer
- Primary Producer
- Photosynthetic organism
- Secondary consumers
Q7 | System resulting from interaction of all the known living factors and populaton of all the species of a unit area is...
- Ecology
- Genetics
- Science of plants and animal
- Ecosystem
Q8 | Which of the following is the correct statement for food chain?
- Every chain formed by nutritional relations , is used to understand energy flow.
- Enery componet of the food chain forms trophic level.
- Inter- relation amongest different food chain froms food web.
- All of the given
Q9 | Which of the following uses maximum energy?
- Primary comsumer
- Secondary consumer
- Decomposer
- Primary Producers
Q10 | Through, whoch of the following, enery enters in an ecosyslem?
- Herbivore
- Producer
- Decomposer
- Primary producers
Q11 | Why is algae placed in first place of food chain ?
- Algae is first to synthesize food.
- Algae is first to consume food.
- Every living organisam can utilize fo
Q12 | In which of the following wheat eating pegions included ?
- Decomposer
- Primary consumer.
- primary producers
- secondary consumer.
Q13 | which of the following is placed in upper most (highest) level of ecological pyramids.
- Herbivore
- Carnivors
- Primary and Secondary Producers.
- Primary and Secondary consumer.
Q14 | As we proceed in food chain, bio-mass.....
- Remain Same
- Decreases
- Increases
- Initially same and later keep decreasing.
Q15 | In ecosystem the source of energy is....
- ATP
- Sun
- The Green plant
- Sugar.
Q16 | Who is primary consumer of biotic community ?
- Herbivores/ Grazing animal
- Omnivores
- Scavengers
- Carnivores.
Q17 | In which of the following weeds are placed ?
- Primary producer
- Secondary consumer.
- Primary consumer.
- Decomposer.
Q18 | When does the energy flow start in an ecosystem ?
- When material cycle starts
- When sun rises
- When any living organisam gain fo
Q19 | which of the following option is correct for storage place phosphorus and nitrogen respectively ?
- Consumer
- Parental rock and environment
- Environment and producers
- Environment and parental rock
Q20 | An individual ''x'' uses mashroom as food then in which trophic level mashroom and''x'' are included?Mashroom X Foodchain
- Secondary Primary ? Detritivorous food chain
- Primary Secondary? Detritivorous food chain
- Primary Secondary ? Grazing food chain
- Secondary Primary ? Grazing food chain
Q21 | Which of the following is trophic level of the orchid staying on mango tree ?
- First
- Tertiary/ Third
- Second
- Fourth
Q22 | It is correct for ecosystem.......
- ( Plants, Animals, Microorganisms) + Abiotic environment
- Community formed by various species present in a particular region.
- Animal, plants and micro- organisms.
- Abiotic factors
Q23 | What is the original source of energy for the living organisms ?
- Carbohydrate
- Sun light
- ATP
- Lipid
Q24 | In which of the following curd eating people are included ?
- Producer
- First ]1[s
- Tertory 3[ ]rd
- Second 2[ ]nd
Q25 | The functional efficiency of ecosystem is effected when decomposers are removed from it, because..
- Energy flow will stop
- Rest components decomposetion will become faster
- Herbivous will not get sun light
- Flow of nutrient will stop.