Biology 12th Class Ecosystem Unit 25 Solution MCQs

Biology 12th Class Ecosystem Unit 25 Solution MCQs.Ecosystem multiple choice questions (MCQs) from unit 25 of FSC Biology were solved. All multiple-choice questions come from past Board exams held between 2014 and 2018. There are both short and lengthy questions for this chapter (25 of the 2nd year of Biology).

Ecosystem Solved MCQs

MULTIPLE CHOICE QUESTIONS (MCQs) Concerning the Ecosystem
(Taken from papers presented to the board in 2014–2015–2016–2017–2018)
The niche was referred to by Eton as the species. (DGK. GII, 2016)
(A) Manner, (B) Address, and (C) Pole (D) Habitat

The specific region or environment in which an organism makes its home is referred to as an organism’s: (BWP. GI, 2016)
(A) Specific Place (B) Specific Conditions (C) Habitat (D) Ecosystem

Any collection of organisms of the same species that interbreed and live together in the same location throughout time and space is referred to as a: (RWP. GI, 2016)
(A) The population (B) The gene pool (C) The true breeders (D) Multiple Alleles

According to LHR and GI (2014), a biome is a: (RWP. 2018)
(A) The Community Is Straightforward (B) The Community Is Complicated (C) The Community Is Regional
(D) The Community of Climax

The word “niche” wasn’t used for the first time until 1917, when an American ornithologist by the name of (LHR. GII, GRW. G1.2014 (SWL. 2018)
(A) Charles Eltarf (B) Joseph Grinnell (C) Ernst Haeckel (D) Lamarck

The study of how a single population interacts with its surrounding environment is known as: (SGD. GI, 2014)

(AJK: GI, 2015/ (AJK. 2018)
A) Autecology B) Synecology C) Niche D) Predation A) Autecology B) Synecology D) Predation

A term that refers to a restricted group of individuals belonging to the same species is the following: (MLN. GI, 2015)
(A) The Neighborhood (B) The People (C) The Ecosystem (D) The Biosphere

The entirety of the land on our planet is referred to as: (RWP. GI, BWP. GI, 2017)
A: the lithosphere B: the ecosphere C: the hydrosphere D: the biosphere

The following constitute the fundamental functional unit of ecology: (SGD. GI, 2017)
(A) Specific Area (B) Specific Population (C) Specific Ecosystem (D) Specific Community

The following things make up the abiotic component of an ecosystem: (SWL. GI, 2014)
A is for the temperature, B is for the producer, C is for the consumer, and D is for the decomposer.

Every single one of the food webs and food chains start with: (DGK. GII, 2014) (BWP. 2018)
A) Primary Consumers B) Secondary Consumers C) Decomposers D) Producers A) Primary Consumers B) Secondary Consumers

Included in the lithosphere are: (BWP. GI, 2015)
(A) the soil of the earth (B) the air (C) the water (D) the gases

The living creatures are responsible for their own food production: (FBD. GI, 2017)
(A) Heterotrophic metabolism (B) Consumers (C) Photosynthesis (D) Decomposers

xerosere, polytrichum, and tortula are all symbols for the following: (LHR. GI, 2016)
Stage A is the herbaceous (plant) stage, Stage B is the moss stage, Stage C is the foliage lichen stage, and Stage D is the crustose lichen stage.

The following are examples of the herbaceous stage in xerosere: (MLN. GI, 2016)
(B) the third phase (C) the fourth phase (D) the final phase

Unit 25 Multiple Choice Questions about the Ecosystem

The phase of lichen development in which the organisms resemble crumpled leaves that are connected to a single point: (DGK GI, 2014 (A) Crustose Lichen stage (B) Foliage Lichen stage (C) Shrub Stage

In every instance, the succession process is kicked off by a handful of tenacious invaders known as: (GRW, GII, 2015)
(A) Starters (B) Pioneers
(C) The Community of the Climax (D) Decomposers

The relationship between host and parasite that exists amongst lichens is an example of (A) parasitism (B) mutualism (C) predation (D) commensalism

The example of this may be seen in the link that exists between insects and Nowering plants: (DGR. GI. 2016#BUP.2618.
A. Parasitism B. Predation C. Mutualism D. Commensalism A. Predation B. Mutualism

If there is an increase in the number of predators, then there will also be an increase in the population of prey (RWP.GI.2018)
(A) It gets higher, (B) It becomes lower, (C) It might go higher (D) Does not affect or lessen in any way.

The animal that is hunted, killed, and consumed is referred to as: (GRW.GI. 2016)
(A) The Insect, (B) The Animal, (C) The Human

The remoras are the ones that stand to gain from this arrangement, whereas the shark is in no way impacted by it:
(A) Symbiosis \s(B) Mycorrhiza \s(C) Commensalism \s(D) Mutualism

An association known as symbiosis in which an algae lives within the mycelium of a fungus is described thus: (SGD. GI, 2014)
Mycorrhiza, Lichen, Root Nodules, and Parasitism are the four categories of this organism.

The ecology may be kept in good condition with the aid of moderate grazing: (RWP. GI.2014)
(A) Desert (B) Tundra (C) Grass Land (D) Pond

Parasitic diseases are diseases that affect living creatures and are caused by parasites (FBD.GI, BWP. GI, 2014)

(FBD. GI. 2015)
A) Infection B) Endoparasites C) Disinfestation D) Ectoparasites A) Infection B) Endoparasites D) Ectoparasites

One of the following is an illustration of the connection between a predator and its prey: (LHR. G1, 2015)
(A) Fungi and algae (B) Flowers and Insects (C) Rodents (D) Bacteria found in Root Nodules

The various stages of the food chain are denoted by the following names: (SWL. GI, 2017)
A, the food chain; B, the food web; C, the trophic level; and D, the energy pyramid

Losses caused by soil erosion, fires, and water percolating through the soil include the following: (MLN. GI. 2014)
Sulfates, carbonates, nitrates, and phosphates are the elements in the correct order.

It is referred to as: “ammonia oxidation” when microorganisms in soil oxidise ammonia or ammonium ion (SGD. GI. 2015XFBD. GI. 2016XDGK. 2013)
(A) Oxidation (B) Denitrification (C) Nitrification
(C) The process of ammonization
D) Nitrification

Microorganisms use proteins and amino acids, and the process that results in the release of ammonia or ammonium ions is referred to as: (DGK. GI, 2015)
(A) The process of nitrification (B) The process of ammonization
C) Denitrification (D) Assimilation

The sum of the sun’s energy that is stored by producers in an ecosystem is about equal to: (GRW.GI, 2015)

(AJK. GI. 2016)
(A) 20 percent (B) 10 percent (C) 05 percent (D 01 percent

Joseph Grinnell, an American, is credited as being the first person to suggest using the word niche: (LHR. GII, 2018)
Embryologist, Ecologist, Ornithologist, and Physiologist are the careers that come to mind first.

The study of various communities and their relationships to their respective environments is referred to as: (FSO, 2018)
evaporation (A), synecology (B), autecology (C), and embryology (D)

Primary succession is the term given to the process that might begin in dry soil or rock. (MEX, 20185
(A) Hydrosere (B) Xerosere (C) Desert (D) Derosere

Chapter 25 Ecosystem Questions:

What exactly is “Grazing”?
Define Commensalism.?
What exactly are the lichens?
Roots nodule and mycorrhiza should be distinguished from one another.
Define Niche.
What exactly is the biosphere?
What exactly are these “Decomposers”?

Question For Explanation:

In what ways are you familiar with the fields of autecology and synecology? Do they play an essential role in the survival of the biome?
Define succession. Talk about the passing of land ownership.

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