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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Ecosystem Set 3
Q1 | Immature fall of floral bud and fruits are observed in a farm, and on leaves Red and purple pigments spots are observed, In which of following place is Such Symptoms will not be observed in plants
- Sea shore
- Bank of river
- Foot hills of mountain
- Red Soil
Q2 | who is responsible for the process like, Phosphate Containing Organic compound? Phosphate
- Certain fungi
- Certain algae
- Certain Specific bacteria
- All three
Q3 | which of the following eco-system has highest annual primary productivity ?
- Tropical deciduou forest
- Tropical Rain forest
- Temperate deciduou forest
- Temperate Ever green forest.
Q4 | Which of the following is not a functional unit of ecosystem ?
- Stratification
- Flow of energy
- Decompos
- productivity.
Q5 | Which of the following associations do not establish functional interspeciific association ?
- Mutualism
- Exosparasite
- Endoparasite
- Commensalism
Q6 | Which statement is correct ?
- Plant uses CO2 during respiration.
- Biomass of the plant is available to only herbivores.
- In all CO2 acceptor plants, organic compounds are produce throudh photosynthesis.
- All three.
Q7 | It is the type of photosynthesis occurs in most of the plants ?
- C4 - Cycle
- C3 - Cycle
- CAM - Cycle
- C2 -Cycle
Q8 | In which of the following alimentory canal, '' starch ? glucosen'' is prodused ?
- Producer
- Ist trophic layer
- IInd trophic layer
- All of types
Q9 | In an ecosystem, Which of the following is unidirectional ?
- Sulphar
- Organic nutrient
- carbon
- Free energy
Q10 | Who is first to receive Phosphate released through leaching in phosphate cycle ?
- Decomposer
- producer
- Consumer
- None of the given
Q11 | Which of the following is not a pair of Gaseous cycle ?
- P&N
- N & S
- N & S
- C & P
Q12 | What is indicated by Pyramid of number ?
- Number of individuals at every trophic layer.
- Species belonging to a particular region.
- Number of member of biotic- community
- None of the given.
Q13 | Which of the following has maximun importance (value) in grass- land.
- Secondary Production
- Net Production
- Tetiacry Prroduction
- Total Production.
Q14 | Grass ? cow? lion. If productivity of grass is 5000 kg/ Meter/ year. Then What will be theproductivity of lion ? (In general)
- 500
- >50
- 1000 / / .2kg mter year
- >100
Q15 | In which stage of the Decomposition, larger surface area for future decomposition is availabel?
- st 1
- 2nd
- 3rd
- All of the above
Q16 | In the given chart from carnivores to producer energy level gradually.
- Decreases
- Increases
- Decreases & increases both are possible
- None
Q17 | which of the given option is shows more stable ecosystem ? Producer primary Secondary Tertiary Total consumer consumer consumer
- 100 200 150 80 530
- 900 500 225 40 1665
- 200 100 125 75 500
- All of the given.
Q18 | which of the following is one of the causes of cancer ?
- Obesity
- Artheros cerosis
- Inadcquale of O2 supply
- Hypertension
Q19 | which option is more suitable for x and y ?_ans_key_X : Animal cells possesses mitochondria._ans_key_Y : IN animal cell energy is released when carbohydrates are completely broken .
- Both are correct
- Both are wrong
- If x is correct then only y is correct .
- X : correct Y : wrong
Q20 | Which of the following stage is possible by the activity of Hetorotrophs ?
- Utility
- Re-accommodation
- Decmposition
- All the given
Q21 | The herbaceohs plant has 100 gram whight then what would be the average bio-mass of the same ?
- 100 gram
- 20-25 gram
- 10-15 gram
- 85-90 gram
Q22 | In the given pyramid of energy which of the following can be placed in first trophic level ?
- Decomposer
- plants
- a & b Both
- None
Q23 | X is structaral unit of economy and y is structra unit of x then ... what is the x and the y ? X Y
- Biotic community - Biomass, Abiotic factor
- Ecosystem - Biomass,Biotic factor
- Biomass - Ecosystem
- Food web - Ecosystem
Q24 | X is maintained by man, but it is harmful to y ,the x and y are (?) X Y
- Natural eco-system - Man made ecosystem
- Man made ecosystem - Natural eco-system
- Any one from a & b
- Noun of these
Q25 | X is included in environmental factors; y is included in ediphic ( soil related) then the x & y is.... X Y
- Air Water
- Water Air
- Soil Light
- Wind Air