Ecosystem Set 1 MCQs

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.