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Free download in PDF Ecosystem Short Questions and 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>
What is obtained by the activity of decomposer for the producers ?
[A]
Nutrient
[B]
Food
[C]
Carbohydrate
[D]
Energy
(2)
It 1 lac living organisms are included in third trophic level than what would be the number of producers ?
[A]
10 lac
[B]
10 thousand
[C]
1 thousand
[D]
1crore (million)
(3)
In an ecosystem, when organisms can be included in more than one trophic level ?
[A]
Phytoplankton
[B]
Fish
[C]
Zooplankton
[D]
Frog
(4)
When organism of aquatic ecosystem is at equivalent trophic level in when cow is included ?
[A]
Zooplankton
[B]
Phytoplankton
[C]
Nekton
[D]
Benthos
(5)
Which of the follows is an in complent Ecosystem ?
[A]
Grass land
[B]
Cave
[C]
River
[D]
Wet land
(6)
What is correct for human ?
[A]
Herbivore
[B]
Carnivore
[C]
Autotrophs
[D]
Omnivores
(7)
Which type of organisms, fungi & Bacteria of forest ecosystem generally called ?
[A]
Producers
[B]
Decomposers
[C]
Primary consumer
[D]
Secondary consumers
(8)
What is correct for the artificial ecosystem ?
[A]
Biodiversity is less
[B]
Biodiversity is High
[C]
Ecosystem can not be form by human
[D]
It is more stable than Natural ecosystem
Answer: Biodiversity is less
(9)
The natural place of an organism or community is known as
[A]
Niche
[B]
Biome
[C]
Habitat
[D]
Habit
(10)
Which is the renewable exhaustible natural energy resource?
[A]
Coal
[B]
Petroleum
[C]
Kerosene
[D]
Biomass
(11)
According to Shelford’s Law of Tolerance, the organisms wide environmental factor tolerance limit show
[A]
Narrow distribution with low population size
[B]
Wide distribution with high population size
[C]
Narrow distribution with high population size
[D]
Wide distribution with low population size
Answer: Wide distribution with high population size
(12)
Plants growing under direct sunlight are known as
[A]
Heliophytes
[B]
Sciophytes
[C]
Psamophytes
[D]
Dicots
(13)
Plants growing under shade are known as
[A]
Psamophytes
[B]
Sciophytes
[C]
Heliophytes
[D]
Monocots
(14)
An orchid living on a tree exhibit
[A]
Predator
[B]
Mutualism
[C]
Commensalism
[D]
Parasitic
(15)
Which statement is correct with respect to the food chain?
[A]
Every component of food chain forms trophic level
[B]
Inter-relation between different food chains is known as a food web
[C]
All the chains formed by nutritional relations is used to understand energy flow
[D]
All of the above
(16)
The process of vernalization is practised in
[A]
Cold countries
[B]
Hot countries
[C]
Only in sub-tropical countries
[D]
Only in tropical countries
(17)
Which of the following requires maximum energy?
[A]
Secondary consumer
[B]
Decomposer
[C]
Primary consumer
[D]
Primary producer
(18)
The bottom area where production is less than respiration in a pond ecosystem is termed as
[A]
Profundal zone
[B]
Tidal zone
[C]
Benthic zone
[D]
Limnetic zone
(19)
Which is not the characteristic of ‘r’ selected species?
[A]
Reproduce quickly
[B]
Parental care
[C]
A low survival rate of progenies
[D]
Produce a large number of progenies
(20)
Which is not the characteristic of a population?
[A]
Natality
[B]
Mortality
[C]
Stratification
[D]
Sex ratio
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