Solved MCQs Ecosystem unit 25 Fsc Biology part 2. All MCQs are from previous Board papers 2014 to 2023. 2nd Year Biology chapter 25 short questions and long questions.
Solved MCQs Ecosystem Unit 25
Ecosystem
MULTIPLE CHOICE QUESTIONS (MCQ’s)
(From Previous Board Papers 2014-2015-2016-2017-2018)
Eton defined the Niche as the species: (DGK. GII, 2016)
(A) Behavior
(B) Address
(C) Pole
(D) Habitat
The actual location of place, where an organism lives is called its: (BWP. GI, 2016)
(A) Niche
(B) Environment
(C) Habitat
(D) Ecosystem
Any group of interbreeding organisms of the same species that exist together in both time
and space is called: (RWP. GI, 2016)
(A) Gene pool
(B) Population
(C) True breeders
(D) Multiple Alleles
Biome is a: (LHR. GI, 2014)(RWP. 2018)
(A) Simple Community
(B) Complex Community
C) Regional Community
(D) Climax Community
In 1917, the term Niche was first proposed by American Ornithologist named: (LHR. GII, GRW. G1.2014,(SWL. 2018)
(A) Charles Eltarf
(B) Joseph Grinnell
(C) Ernst Haeckel
(D) Lamarck
Study of a single population’s relationship to its environment is called: (SGD. GI, 2014)(AJK: GI, 2015/(AJK. 2018)
A) Autecology
(B) Synecology
(C) Niche
(D) Predation
A localized group of individuals belonging to the same species is called as: (MLN. GI, 2015)
(A) Community
(B) Population
(C) Ecosystem
(D) Biosphere
The whole of the world land is called: (RWP. GI, BWP. GI, 2017)
(A) Lithosphere
(B) Ecosphere
(C) Hydrosphere
(D) Biosphere
The basic functional unit of ecology is: (SGD. GI, 2017)
(A) Niche
(B) Population
(C) Ecosystem
(D) Community
The abiotic component of an ecosystem is: (SWL. GI, 2014)
(A) Temperature
(B) Producer
(C) Consumer
(D) Decomposer
All the food chains and food webs begin with: (DGK. GII, 2014)(BWP. 2018)
(A) Primary Consumers
(B) Secondary Consumers
(C) Decomposers
(D) Producers
Lithosphere includes: (BWP. GI, 2015)
(A) Earth Soil
(B) Air
(C) Water
(D) Gases
The living organisms producing their own food: (FBD. GI, 2017)
(A) Heterotrophis
(B) Consumers
(C) Green plants
(D) Decomposers
xerosere, polytrichum and tortula represent: (LHR. GI, 2016)
(A) Herbaceous (plant) stage
(B) Moss stage
(C) Foliage lichen stage
(D) Crustose lichen stage
Herbaceous stage in xerosere is the: (MLN. GI, 2016)
(B) Third stage
(C) Fourth stage
(D) Last stage
Solved MCQs Ecosystem Unit 25
The stage in which Lichens are just like crumpled leaves attached to one point: (DGK GI, 2014
(A) Crustose Lichen stage
(B) Foliage Lichen stage
(C) Shrub Stage
In each case, succession is initiated by a few hardy invaders called: (GRW, GII, 2015)
(A) Starters
(B) Pioneers
(C) Climax Community
(D) Decomposers
Lichens are an example of:
(A) Parasitism
(B) Mutualism
(C) Predation
(D) Commensalism
The relationship between insects and Nowering plants is the example of: (DGR. GI. 2016#BUP.2618.
(A) Parasitism
(B) Predation
C) Mutualism
(D) Commensalism
If the population of predator increase then the population of pres: (RWP.GI.2018)
(A) Increases
B) Decreases
(C) May increase
(D) Has no effect or decrease
The animal that is caught and eaten is called: (GRW.GI. 2016)
(A) Parasite
(B) Predator
(C) Prey
The remoras benefit from this relationship the shark is not affected at all:
(A) Symbiosis
(B) Mycorrhiza
(C) Commensalism
(D) Mutualism
Symbiotic association of an alga living within fungus mycelium is known as: (SGD. GI, 2014)
(A) Mycorrhiza
(B) Lichen
(C) Root Nodules
(D) Parasitism
Moderate grazing is very helpful to maintain ecosystem: (RWP. GI.2014)
(A) Desert
(B) Tundra
(C) Grass Land
(D) Pond
Diseases in living organisms caused by parasites are called: (FBD.GI, BWP. GI, 2014)(FBD. GI. 2015)
A) Infection
(B) Endoparasites
(C) Disinfestation
(D) Ectoparasites
One of the following is an example of the predator-prey relationship: (LHR. G1, 2015)
(A) Fungus and alga
(B) Flower and Insect
(C) Fox and Rabbit
(D) Root Nodule Bacteria
The bacteria in the root nodules fix nitrogen and convert it into: (L. IR. GII, 2015)
(A) Nitrate
(B) Nitrite
(C) Amino Acid
(D) Ammonia
The distinct levels of the food chain are called: (SWL. GI, 2017)
(A) Food chain
(B) Food web
(C) Trophic level
(D) Energy Pyramid
Soil erosion, Fire, and Water percolation down through the soil cause loss of: (MLN. GI. 2014)
(A) Sulphates
(B) Carbonates
(C) Nitrates
(D) Phosphates
When bacteria in soil oxidize ammonia or ammonium ion is called: (SGD. GI. 2015XFBD. GI. 2016XDGK. 2013)
(A) Oxidation
(B) Denitrification
(C) Ammonification
D) Nitrification
The process in which microorganisms use the proteins and amino acids and release
ammonia or ammonium ions is known as: (DGK. GI, 2015)
(A) Nitrification
(B) Ammonification
C) Denitrification
(D) Assimilation
The total energy of the sun, trapped by the producer in an ecosystem is about: (GRW.GI, 2015)(AJK. GI. 2016)
(A) 20%
(B) 10%
(C) 05%
(D 01%
The term niche was first proposed by Joseph Grinnell an American: (LHR. GII, 2018)
(A) Embryologist
(B) Ecologist
(C) Ornithologist
(D) Physiologist
The study of different communities with relation to the environment is called: (FSO, 2018)
(A) evaporation
(B) Synecology
(C) Autecology
(D) Embryology
Primary succession may start in dry soil or rock is called: (MEX, 20185
(A) Hydrosere
(B) Xerosere
(C) Desert
(D) Derosere
Ecosystem Chapter 25 Important short Questions:
What is Grazing?
Define Commensalism.?
What are Lichens?
Differentiate between Root Nodules and Mycorrhiza.
Define Niche.
What is Biosphere.?
What are Decomposers?
Long Questions:
What do you know about autecology and synecology? Are they important to survive in the biome?
Define succession. Discuss succession on land.