MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
NEET
NEET Biology MCQ
Neet Biology Ecosystem Mcq
Quiz 4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Q.1
Ecological pyramids are of types .... .... [M.P.P.M.T.1997]
0%
a) Two
0%
b) Three
0%
c) Four
0%
d) Five
Explanation
Ecological pyramids are of three types: (a) Pyramid of number (b) Pyramid of biomass (c) Pyramid of energy Answer : (b)
Q.2
Energy enters a food chain through ..... ..... [C.P.M.T.2003]
0%
a) Producers
0%
b) Decomposer
0%
c) Herbivores
0%
d) Carnivores
Explanation
Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next. Energy enters the food chain through producers. Answer : (a)
Q.3
Decreased rainfall in northern areas is due to ..... .... [D.P.M.T. 1996]
0%
a) Changes in sun
0%
b) Global phenomenon
0%
c) Deforestation in catchment areas
0%
d) Deforestation in evaporating area near equator
Explanation
Deforestation leads to irregular water cycle, as a result there is decreased rainfall. Deforestation in catchment areas is the main reason behind the decreased reainfall in northern region. Answer : (c)
Q.4
Transfer of energy is different trophic levels of an ecosystem is .... .... C.E.T.Chd.1997
0%
a) Bioenergetics
0%
b) Biosystem
0%
c) Geobiocoenosis
0%
d) Holocoenosis
Explanation
Flow of energy in different trophic levels of an ecosystem is called as bioenergetics. It is also called as energy flow. Answer : (a)
Q.5
In a pyramid of biomass, primary producers have a dry biomas of 809 kg/m2.The biomass at tertiary consumer level would be .... .... [ A.M.U. 2012]
0%
a) 37 kg/m2
0%
b) 11 kg/m2
0%
c) 5 kg/m2
0%
d) 1.5 kg/m2
Explanation
Pyramid of biomass shows a sharp decrease in biomass at higher trophic levels Answer : (d)
Q.6
Ecosystem is .... ..... [Odisha 2005]
0%
a) Always open
0%
b) Always closed
0%
c) Both open and closed depending upon community
0%
d) Both open and closed depending upon biomass
Explanation
In an open system, both matter and energy are exchanged between the system and its surrounding environment. Any ecosystem is an example of an open system. Energy can enter the system in the form of sunlight, for example, and leave in the form of heat. Matter can enter the system in many ways. Answer : (a)
Q.7
Which one is non renewable energy source? .... .... [H.P.P.M. 2005]
0%
a) Hydropower
0%
b) Tidal power
0%
c) Geothermal power
0%
d) Nuclear energy
Explanation
A non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption. There are four major types of nonrenewable resources: oil, natural gas, coal, and nuclear energy. Answer : (d)
Q.8
Tropical forests are denser due to .... .... [C.P.M.T.2002]
0%
a) wild animals
0%
b) High temperature and less rainfall
0%
c) Low temperature and excess rain
0%
d) High temperature and high rainfall
Explanation
Tropical rainforests are the densest of all the forests, due to abundant rainfall and sunshine. Since there is a lot of sunlight, there is a lot of energy in the rainforest. This energy is stored in plant vegetation, which is eaten by animals. The abundance of energy supports an abundance of plant and animal species. Answer : (d)
Q.9
Most economical and effective method of control of soil pH is application of .... .... [A.M.U. 2011]
0%
a) CaCO3
0%
b) Ca(OH)2
0%
c) CaCl2
0%
d) Ca(NO3)2
Explanation
To make soils less acidic, the common practice is to apply a material that contains some form of lime. Ground agricultural limestone is most frequently used. The finer the limestone particles, the more rapidly it becomes effective. Limestone is a sedimentary rock composed principally of calcium carbonate (CaCO3) Answer : (a)
Q.10
Which occupies more than one trophic level in the same ecosystem at the same time ... .... [C.B.S.E.2011]
0%
a) Sparrow
0%
b) Goat
0%
c) Frog
0%
d) Lion
Explanation
Sparrow is a primary consumer because it depends on producers. Sparrow eats seeds, fruits, peas. Sparrow becomes secondary consumer when it attackes and eats insects and worms. Insects and worms are primary consumer and this makes sparrow secondary sparrow. Answer : (a)
Q.11
In a food chain, herbivores/deer/grasshoppers are .... .... [M.P.P.M.T.2002]
0%
a) Primary producers
0%
b) Primary consumers
0%
c) Secondary consumers
0%
d) Decomposers
Explanation
Herbivores such as deer and grasshopper depends on producers directly. This makes herivores a second trophic level. Second trophic level is called primary consumer. Answer : (b)
Q.12
Detritus food chain begins with .... .... [Odisha 2007]
0%
a) Bacteria
0%
b) Viruses
0%
c) Algae
0%
d) Protozoa
Explanation
Answer : (a)
Q.13
An ammonifying bacteria is .... ..... [A.M.U.2002]
0%
a) Clostridium
0%
b) Azotobacter
0%
c) Nitrosococcus
0%
d) Bacillus ramosus
Explanation
Answer : (d)
Q.14
The most stable ecosystem is .... .... [B.H.U.2002]
0%
a) Forest
0%
b) Moutain
0%
c) Desert
0%
d) Ocean
Explanation
Answer : (d)
Q.15
Which is not functional unit of an ecosystem .... .... [C.B.S.E. 2012]
0%
a) Productivity
0%
b) Decomposition
0%
c) Energy flow
0%
d) Stratification
Explanation
Answer : (d)
Q.16
Nitrogen is a critical element of the ecosystem because it is .... ..... [B.H.U.1996]
0%
a) Essential element
0%
b) Abundant in atmosphere
0%
c) Labile
0%
d) Fixed by microbes
Explanation
Answer : (c)
Q.17
Clove oil is got from .... .... [Odisha 2009]
0%
a) Crocus sativa
0%
b) Zingiber officinale
0%
c) Curcuma
0%
d) Syzygium aromaticum
Explanation
Answer : (d)
Q.18
In a biotic community, the most important factor for survival of an animals is .... .... [R.P.M.T.2006]
0%
a) Day length
0%
b) Soil moisture
0%
c) Green food
0%
d) Predators
Explanation
Answer : (c)
Q.19
During summer khas khas mats used for cooling air are prepared from roots of .... .... [M.P.P.M.T. 2010]
0%
a) Saccharum munja
0%
b) Bambusa nana
0%
c) Vetiveria zizanioides
0%
d) Setaria pumila
Explanation
Answer : (c)
Q.20
Standing crop is .... .... [J.K.C.M.E.E. 2011]
0%
a) All photosynthetic living forms of an area
0%
b) Amount of living matter in a component of population at any time
0%
c) All living forms
0%
d) All crops plants in an area
Explanation
Answer : (b)
Q.21
Nepenthes belongs to the category of .... .... [C.P.M.T.1990]
0%
a) Primary consumer
0%
b) Producer
0%
c) secondary consumer
0%
d) Both B and C
Explanation
Answer : (d)
Q.22
Controlling factor in ecosystem is .... ..... [C.E.T.Chd2000]
0%
a) Soil moisture
0%
b) Food
0%
c) Predation
0%
d) Temperature
Explanation
Answer : (c)
Q.23
Which one is nature's cleaner? .... ..... [Pb.PM.T.1997]
0%
a) Consumers
0%
b) Producers
0%
c) Decomposers and scavengers
0%
d) Symbionts
Explanation
Answer : (c)
Q.24
Major communities of the world are .... ..... [B.H.U.1996]
0%
a) Scrubs, jungles and gardens
0%
b) Ocean, fresh water and forest communities
0%
c) Grassland and desert communities
0%
d) Both B and C
Explanation
Answer : (d)
Q.25
Deforestation will decrease ..... ..... [C.B.S.E. 1990[
0%
a) Soil erosion
0%
b) Land slides
0%
c) Soil fertility
0%
d) Rainfall
Explanation
Answer : (d)
Q.26
The importance of ecosystem lies in .... ..... [C.P.M.T. 1990]
0%
a) Cycling of materials
0%
b) Flow of energy
0%
c) Both A and B
0%
d) Its biomass
Explanation
Answer : (c)
Q.27
Broad-leaves oaks are found in .... .... [A.F.M.C.2004]
0%
a) Tropical evergreen forest
0%
b) Temperate deciduous forest
0%
c) North coniferous forest
0%
d) Tropical deciduous forest
Explanation
Answer : (b)
Q.28
Carnivores represent .... ..... [M.P.P.M.T.1993]
0%
a) Primary consumers
0%
b) Secondary and tertiary consumers
0%
c) Secondary consumers
0%
d) Reducers
Explanation
Answer : (b)
Q.29
Animals like Mice, Lizards and Cockroach share their habitat with human dwellings. They are .... .... [Kerala 2001]
0%
a) Inquilines
0%
b) Cultigens
0%
c) Transplants
0%
d) Humus
Explanation
Answer : (a)
Q.30
Moderate rain during summer produces .... .... [A.I.I.M.S.1998]
0%
a) Desert
0%
b) Grassland
0%
c) Scrub forest
0%
d) Deciduous forest
Explanation
Answer : (d)
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page