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Ecosystem MCQs | Ecosystem Objective Type Questions with Answers

Questions
1 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
A Sea shore
B Bank of river
C Foot hills of mountain
D Red Soil

Answer:Foot hills of mountain
2 Who is responsible for the process like, Phosphate Containing Organic compound Phosphate
A Certain fungi
B Certain algae
C Certain Specific bacteria
D All three

Answer: Certain Specific bacteria
3 Which of the following eco-system has highest annual primary productivity ?
A Tropical deciduous forest
B Tropical Rain forest
C Temperate deciduous forest
D Temperate Ever green forest

Answer:Tropical Rain forest
4 Which of the following is not a functional unit of ecosystem ?
A Stratification
B Flow of energy
C Decompos
D Productivity

Answer:Stratification
5 Which of the following associations do not establish functional interspeciific association ?
A Mutualism
B Exoparasite
C Endoparasite
D Commensalism

Answer: Commensalism
6 Which statement is correct?
A Plant uses CO2 during respiration
B Biomass of the plant is available to only herbivores
C In all CO2 acceptor plants, organic compounds are produce through photosynthesis
D All three

Answer:In all CO2 acceptor plants, organic compounds are produce through photosynthesis
7 It is the type of photosynthesis occurs in most of the plants?
A C4 - Cycle
B C3 - Cycle
C CAM - Cycle
D C2 –Cycle

Answer: C3 - Cycle
8 In which of the following alimentary canal, '' starch glucose'' is produced ?
A Producer
B Ist trophic layer
C IInd trophic layer
D All of types

Answer:Ist trophic layer
9 In an ecosystem, which of the following is unidirectional?
A Sulphur
B Organic nutrient
C carbon
D Free energy

Answer:Free energy
10 Who is first to receive Phosphate released through leaching in phosphate cycle ?
A Decomposer
B Producer
C Consumer
D None of the given

Answer:producer
11 Which of the following is not a pair of Gaseous cycle?
A P & N
B N & S
C N & S
D C & P

Answer:N & S
12 What is indicated by Pyramid of number ?
A Number of individuals at every trophic layer
B Species belonging to a particular region
C Number of member of biotic- community
D None of the given

Answer: Number of individuals at every trophic layer
13 Which of the following has maximun importance (value) in grass- land.
A Secondary Production
B Net Production
C Tertiary Production
D Total Production

Answer:Total Production
14 Which of the following is one of the causes of cancer ?
A Obesity
B Artheroscerosis
C Inadequate of O2 supply
D Hypertension

Answer: Inadequate of O2 supply
15 Which of the following stage is possible by the activity of Heterotrophs ?
A Utility
B Re-accommodation
C Decomposition
D All the given

Answer:All the given
16 The herbaceous plant has 100 gram weight then what would be the average bio-mass of the same ?
A 100 gram
B 20-25 gram
C 10-15 gram
D 85-90 gram

Answer:10-15 gram
17 In material cycle which of the following is last acceptor of material ?
A Producer
B Decomposer
C Consumer
D Is not possing

Answer:Is not possing
18 Which component are basic in maintaing body processes?
A Carbohydrate
B Water
C Energy
D All of this

Answer: All of this
19 What is mycorhizer ?
A Root + Fungi = Symbiotic
B Root+ bacteria = Symbiotic
C fungi +Root = Parasitism
D Fungi +leaf = Parasitism

Answer: Root + Fungi = Symbiotic
20 It is key- compound for all living organism ?
A Sulphur
B Phosphorus
C Nitrogen
D Calcium

Answer: Phosphorus

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