Ecosystem : NEET Practice Questions, MCQs, Past Years Questions, NCERT Questions, Question Bank, Class 11 & 12 Questions with Answers, Trivia, Quiz, Interview MCQ

Ecosystem : NEET MCQ Questions

Are you looking for NEET MCQ Questions on Ecosystem? If Yes then you are at right place. Here you will find Ecosystem NEET MCQ Questions and Answers, Trivia, Quiz, Interview MCQ & Ecosystem Current Affairs for Competitive Exams like Neet exams, around 30% to 40% of Neet questions are asked from given Ecosystem Mcqs. as you know Questions and Ansers on Ecosystem MCQS is very important for Neet Exam. In this Ecosystem NEET section for Neet competition we are covering NEET MCQ Questions on Ecosystem

Contents

Q 1 : Phosphorus usually becomes a limiting factor at certain times of the year in which ecosystem?
Q 2 : Which one of the following is a major constituent of biological membranes, nucleic acids and cellular energy transfer systems?
Q 3 : Decomposers of an ecosystem include?
Q 4 : What is the natural reservoir of phosphorus?
Q 5 : When the number of organisms at successive levels are plotted, they assume the shape of a pyramid. This is called the pyramid of?
Q 6 : Where do herbivores/deer fit into a food chain?
Q 7 : The slow rate of decomposition of fallen logs in nature is due to theirs?
Q 8 : Pyramid of numbers is?
Q 9 : Approximately 70% of the world’s fresh water is contained in?
Q 10 : Last stabilised community in a plant succession is known as?
Q 11 : Tip of the ecological pyramid is occupied by?
Q 12 : In the grass-deer-tiger food chain, grass biomass is one tonne. The tiger biomass shall be?
Q 13 : What percentage of the PAR is captured by the plants?
Q 14 : Among the following biogeochemical cycles which one does not have losses due to respiration?
Q 15 : Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?
Q 16 : At the edge of a lake or ocean, an area alternately exposed to air and immersed in water is called?
Q 17 : What is the natural reservoir of phosphorus?
Q 18 : Which type of pyramid of number is present in the tree ecosystem?
Q 19 : If an ecosystem is composed of only three trophic levels then how much energy will be conserved at the III trophic level?
Q 20 : Ecosystem is?
Q 21 : Which of the following statements is true?
Q 22 : What do both hydrarch and xerarch successions lead to?
Q 23 : In which ecosystem can an inverted pyramid of biomass be found?
Q 24 : How much of the net primary productivity of a terrestrial ecosystem is eaten and digested by herbivores?
Q 25 : What is ecological succession on sand?
Q 26 : What are the early settlers on a barren area (rock)?
Q 27 : What is the mass of living material at a particular time at a trophic level?
Q 28 : Which of the following statements is not a major concern about our altering of the carbon cycle?
Q 29 : What is a succession in saline soil?
Q 30 : What is the role of producers in an ecosystem?
Q 31 : Which one of the following animals may occupy more than one trophic level in the same ecosystem at the same time?
Q 32 : The reservoir for the gaseous type of bio-geochemical cycle exists in the
Q 33 : Secondary productivity is the rate of formation of new organic matter by?
Q 34 : What are the organisms that are used as food materials but that are not killed by other organisms in nature?
Q 35 : An ecosystem that can be easily damaged but can recover after some time if the damaging effect stops will be having?
Q 36 : Energy flow in an ecosystem is?
Q 37 : Which of the following in an ecosystem exhibits one-way flow rather than cyclic flow?
Q 38 : In a food web, each successive trophic level has?
Q 39 : The rate of formation of new organic matter by a rabbit in grassland is called?
Q 40 : During ecological succession?
Q 41 : What are the changes that occur in communities as a result of ecological succession?
Q 42 : Which of the following is expected to have the highest value (gm/m2/yr) in a grassland ecosystem?
Q 43 : Intermediate communities between pioneer and climax communities are called?
Q 44 : Which one of the following is a primary consumer in the maize field ecosystem?
Q 45 : Which one of the following statements is correct?
Q 46 : What are the two components of an ecosystem?
Q 47 : In a forest ecosystem, bacteria and fungi are generally?
Q 48 : Grassland with scattered trees is called?
Q 49 : In ecological succession from pioneer to climax community, the biomass shall?
Q 50 : What do you call the biomass that herbivores and decomposers can consume?

Question 1 : Phosphorus usually becomes a limiting factor at certain times of the year in which ecosystem?

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Question 2 : Which one of the following is a major constituent of biological membranes, nucleic acids and cellular energy transfer systems?

Question 3 : Decomposers of an ecosystem include?

Question 4 : What is the natural reservoir of phosphorus?

Question 5 : When the number of organisms at successive levels are plotted, they assume the shape of a pyramid. This is called the pyramid of?

Question 6 : Where do herbivores/deer fit into a food chain?

Question 7 : The slow rate of decomposition of fallen logs in nature is due to theirs?

Question 8 : Pyramid of numbers is?

Question 9 : Approximately 70% of the world’s fresh water is contained in?

Question 10 : Last stabilised community in a plant succession is known as?

Question 11 : Tip of the ecological pyramid is occupied by?

Question 12 : In the grass-deer-tiger food chain, grass biomass is one tonne. The tiger biomass shall be?

Question 13 : What percentage of the PAR is captured by the plants?

Question 14 : Among the following biogeochemical cycles which one does not have losses due to respiration?

Question 15 : Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?

Question 16 : At the edge of a lake or ocean, an area alternately exposed to air and immersed in water is called?

Question 17 : What is the natural reservoir of phosphorus?

Question 18 : Which type of pyramid of number is present in the tree ecosystem?

Question 19 : If an ecosystem is composed of only three trophic levels then how much energy will be conserved at the III trophic level?

Question 20 : Ecosystem is?

Question 21 : Which of the following statements is true?

A. Decomposition rate is slower if detritus is rich in lignin and chitin, and quicker if detritus is rich in nitrogen and water-soluble substances like sugars.

B. Decomposition rate is slower if detritus is rich in nitrogen and water-soluble substances like sugars, and quicker if detritus is rich in lignin and chitin.

C. Decomposition rate is slower if detritus is rich in cellulose, and quicker if detritus is rich in phosphorus.

D. Decomposition rate is quicker if detritus is rich in lignin, and quicker if detritus is rich in sulphur.

Show Answer

Question 22 : What do both hydrarch and xerarch successions lead to?

Question 23 : In which ecosystem can an inverted pyramid of biomass be found?

Question 24 : How much of the net primary productivity of a terrestrial ecosystem is eaten and digested by herbivores?

Question 25 : What is ecological succession on sand?

Question 26 : What are the early settlers on a barren area (rock)?

Question 27 : What is the mass of living material at a particular time at a trophic level?

Question 28 : Which of the following statements is not a major concern about our altering of the carbon cycle?

Question 29 : What is a succession in saline soil?

Question 30 : What is the role of producers in an ecosystem?

Question 31 : Which one of the following animals may occupy more than one trophic level in the same ecosystem at the same time?

Question 32 : The reservoir for the gaseous type of bio-geochemical cycle exists in the

Question 33 : Secondary productivity is the rate of formation of new organic matter by?

Question 34 : What are the organisms that are used as food materials but that are not killed by other organisms in nature?

Question 35 : An ecosystem that can be easily damaged but can recover after some time if the damaging effect stops will be having?

Question 36 : Energy flow in an ecosystem is?

Question 37 : Which of the following in an ecosystem exhibits one-way flow rather than cyclic flow?

Question 38 : In a food web, each successive trophic level has?

Question 39 : The rate of formation of new organic matter by a rabbit in grassland is called?

Question 40 : During ecological succession?

Question 41 : What are the changes that occur in communities as a result of ecological succession?

Question 42 : Which of the following is expected to have the highest value (gm/m2/yr) in a grassland ecosystem?

Question 43 : Intermediate communities between pioneer and climax communities are called?

Question 44 : Which one of the following is a primary consumer in the maize field ecosystem?

Question 45 : Which one of the following statements is correct?

A. Warm and moist environment favour decomposition whereas low temperature and anaerobiosis inhibit decomposition

B. Warm and moist environment inhibit decomposition whereas low temperature and anaerobiosis favour decomposition

C. Warm and anaerobiosis favour decomposition whereas low temperature favours decomposition

D. Warm and low temperatures inhibit decomposition whereas anaerobiosis favours decomposition

Show Answer

Question 46 : What are the two components of an ecosystem?

Question 47 : In a forest ecosystem, bacteria and fungi are generally?

Question 48 : Grassland with scattered trees is called?

Question 49 : In ecological succession from pioneer to climax community, the biomass shall?

Question 50 : What do you call the biomass that herbivores and decomposers can consume?

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