ecology & bio environment geography section 1 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT indian geography mcq - 2 EXERCISES
The following question based on Ecology & Bio geography topic of indian geography mcq
(a) organisms of the land to those of the sea by means of river
(b) lower to higher latitudes
(c) one organism to another
(d) the interior of the earth to the surface
The correct answers to the above question in:
Answer: (c)
A food chain is a linear sequence of links in a food web starting from a trophic species that eats no other species in the web and ends at a trophic species that is eaten by no other species in the web.
A food chain differs from a food web because the complex polyphagous network of feeding relations are aggregated into trophic species and the chain only follows linear monophagous pathways. A common metric used to quantify food web trophic structure is food chain length. In its simplest form, the length of a chain is the number of links between a trophic consumer and the base of the web and the mean chain length of an entire web is the arithmetic average of the lengths of all chains in a food web.
Food chains were first introduced by the African-Arab scientist and philosopher Al-Jahiz in the 9th century and later popularized in a book published in 1927 by Charles Elton, which also introduced the food web concept.
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Read more bio ecology environment Based Indian Geography Questions and Answers
Question : 1
Dumping of solid waste in lowlying areas earth cover is called as :
a) Incineration
b) Open dumping
c) Composting
d) Sanitary landfilling
Answer »Answer: (d)
Sanitary landfills are low lying sites where waste is isolated from the environment until it is safe. It is considered when it has completely degraded biologically, chemically and physically. In high-income countries, the level of isolation achieved may be high.
Question : 2
An ecological system is a
a) Bioecological system
b) Biogeochemical system
c) Physicochemical system
d) Biological system
Answer »Answer: (d)
An ecosystem is a community of living organisms (plants, animals and microbes) in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system.
These components are regarded as linked together through nutrient cycles and energy flows.
They are biological system in the sense that they represent recurring groups of biological communities that are found in similar physical environments and are influenced by similar dynamic ecological processes, such as fire or flooding.
Question : 3
Which of the following is a Biological method of soil conservations?
a) Basin listing
b) Contour terracing
c) Gully control
d) Contour farming
Answer »Answer: (d)
The biological methods of soil conservation include contour farming, strip cropping, tillage operation, mulching, etc. Contour farming is practised in hilly regions or on the slopes.
The contours (circular or peripheral furrows) catch the downwardly moving water until it is absorbed in the soil. It reduces runoff, saves more water for crops, and reduces soil erosion.
Question : 4
‘Green Accounting’ means measuring the National Income of the country taking into account estimation of
a) area of reclaimed fallow land
b) the destruction of forest cover of the country
c) pollution and environmental damage
d) the total forest area of the country
Answer »Answer: (c)
Green accounting is a type of accounting that attempts to factor environmental costs into the financial results of operations.
It has been argued that gross domestic product ignores the environment and therefore decision-makers need a revised model that incorporates green accounting.
Question : 5
Which one of the following is an abiotic and renewable resource?
a) forests
b) livestock
c) water
d) iron ore
Answer »Answer: (c)
In ecology and biology, abiotic components (also known as abiotic factors) are non-living chemical and physical factors in the environment, which affect ecosystems. Abiotic phenomena underlie all of biology.
From the viewpoint of biology, abiotic factors can be classified as light or more generally radiation, temperature, water, the chemical surrounding composed of the terrestrial atmospheric gases, as well as soil.
The macroscopic climate often influences each of the above. A renewable resource is a natural resource with the ability to reproduce through biological or natural processes and replenished with the passage of time. Renewable resources are part of our natural environment and form our ecosystem.
Question : 6
In predation between
- A lion and a deer
- A snake and a frog
- A lizard and an insect and
- An owl and a rat
a) Lizard
b) Owl
c) Snake
d) Lion
Answer »Answer: (c)
There are different types of interactions in the biotic community. Frog feeds for snakes. Snakes are the main predators of frogs.
The control over a prey is determined by the level of competition faced by other predators. If the same prey is prey to other predators, the control is considered to be lesser.
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