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Free download in PDF Ecosystem Objective Type Questions with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(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
(5)
Which of the following associations do not establish functional interspeciific association ?
[A]
Mutualism
[B]
Exoparasite
[C]
Endoparasite
[D]
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
(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
(10)
Who is first to receive Phosphate released through leaching in phosphate cycle ?
[A]
Decomposer
[B]
Producer
[C]
Consumer
[D]
None of the given
(11)
Which of the following is not a pair of Gaseous cycle?
[A]
P & N
[B]
N & S
[C]
N & S
[D]
C & P
(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
(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
(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
(17)
In material cycle which of the following is last acceptor of material ?
[A]
Producer
[B]
Decomposer
[C]
Consumer
[D]
Is not possing
(18)
Which component are basic in maintaing body processes?
[A]
Carbohydrate
[B]
Water
[C]
Energy
[D]
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
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