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Ecosystem MCQ. We covered all the Ecosystem MCQ in this post for free so that you can practice well for the exam.
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MCQ on Ecosystem for Students
Carbon monoxide is a pollutant because
(a) It reacts with O₂
(b) It inhibits glycolysis
(c) Reacts with hemoglobin
(d) Makes the nervous system inactive
Option c – Reacts with hemoglobin
One of these is not a method of safe disposal of waste
(a) Landfilling
(b) Surgery equipment to be thrown away from cities to fields
(c) Compositing (digest aerobically by microbial action and converted to humus
(d) Drainage of waste in some large water bodies like the sea.
Option b – Surgery equipment to be thrown away from cities to fields
The natural activity responsible for upsetting the various elements in the Environment is
(a) Rapid urbanization
(b) Forest fires
(c) Afforestation
(d) Population explosion
Option b – Forest fires
One exception all are the effects of greenhouse effects (global warming)
(a) More chances of the formation of glaciers in the hilly areas.
(b) Afforestation
(c) More chances of cyclones, floods, etc.
(d) More susceptibility to diseases
Option b – Afforestation
In acid rain the acid/s that come with rain is/are :
(a) H₂SO4
(b) HNO3
(c) HCI
(d) (a) & (b)
Option d – (a) & (b)
Except for one, all the others are effects of acid rain
(a) Corrosion of stones put outside the building eg. Taj Mahal/statue of liberty
(b) As acid rain accumulates in water bodies it causes the death of aquatic organisms.
(c) The floor and walls of the house are corroded.
(d) It damages plants’ yield & crops.
Option c – The floor and walls of the house are corroded
The amount of ozone in the atmosphere is measured by
(a) Dobson unit
(b) Decibel unit
(c) mmHg
(d) None of these
Option a – Dobson unit
A peel of banana and vegetable covers are thrown on the soil in a park it will
(a) Cause soil pollution
(b) Become humas and make the soil fertile
(c) Be acted on by saprophytes
(d) (b) & (c) both
Option d – (b) & (c) both
A disease seen in Japan by mercury collection in fish as biomagnification that led to various deaths was
(a) Vascularcardio disorders
(b) Minamata disease
(c) Cancer
(d) Malignant Tumor formation
Option b – Minamata disease
CO₂ absorbs some of the ………….. that radiates from the surface of Earth to space
(a) Ozone
(b) Heat
(c) Ultraviolet light
(d) Smog
Option b – Heat
Among the most dangerous non-biodegradable waste is
(a) Cow-dung
(b) Plastic articles
(c) Garbage
(d) Radioactive waste
Option d – Radioactive waste
The depletion of ozone is as
(a) It allows more sunlight to come to Earth
(b) It allows UV light to come to Earth
(c) Both (i) & (ii)
(d) None of the above
Option c – Both (i) & (ii)
Rag pickers remove
(a) Plastic, polythene, paper, and metal wastes
(b) Rags, cardboard, and glass articles
(c) Both (a) and (b)
(d) Food articles.
Option c – Both (a) and (b)
The organization involved in formulating programs for protecting the environment is
(a) WHO
(b) UNDP
(c) UNEP
(d) UNICEF
Option c – UNEP
A decrease in the number of trees may cause
(a) an increase in rainfall
(b) a Decrease in rainfall
(c) a decrease in temperature
(d) a Conservation of nutrients in the soil
Option b – a Decrease in rainfall
Which of the following is biodegradable waste?
(a) Radioactive wastes
(b) Aluminium cans
(c) DDT
(d) Cattle dung
Option d – Cattle dung
In order to maintain proper ecological balance
(a) The existing forests would be cleared and new ones should be planted
(b) Some quick-growing annuals should be planted if a tree must be cut for other uses
(c) the Tree must be cut whenever necessary because the underground part performs the useful purpose
(d) A tree should be planted in place of one to be cut
Option d – A tree should be planted in place of one to be cut
The ozone layer is essential because it absorbs most of the
(a) Infrared radiation
(b) Heat
(c) Solar radiation
(d) Ultraviolet-radiation
Option d – Ultraviolet-radiation
City garbage can be used to produce
(a) Sewage sludge
(b) Useful articles
(c) Biogas and manure
(d) All the above
Option c – Biogas and manure
Which of the following cannot be added to a composting pit to prepare compost?
(a) Fruit and vegetable peels and paper cups
(b) Earthworms and redworms
(c) Pea plants, dried leaves, and sunflower plants
(d) Flowers of plastic and a glass vase
Option d – Flowers of plastic and a glass vase
An analysis of the soil samples revealed 0.1 mg of a pesticide and 1 mg of the same pesticide was found in grains. However, in the adipose tissue of birds, the concentration was 2 mg. The reason for this is the phenomenon known as
(a) Bio-absorption
(b) Bio-translocation
(c) Bio-magnification
(d) Bio-multiplication
Option c – Bio-magnification
Which layer of planet earth’s atmosphere protects it from the harmful UV radiations of the sun?
(a) Stratosphere
(b) Ozonosphere
(c) Troposphere
(d) Ionosphere
Option d – Ionosphere
In the following groups of materials, which group(s) contains only non-biodegradable items? A. Wood, paper, leather B. Polythene, detergent, PVC C. Plastic, detergent, grass D. Plastic, bakelite, DDT
(a) C
(b) D
(c) A and C
(d) B and D
Option d – B and D
Ozone hole means
(a) a Hole in the stratosphere
(b) a Same concentration of ozone
(c) a Decrease in the concentration of ozone
(d) an increase in the concentration of ozone
Option c – a Decrease in the concentration of ozone
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