Environmental Studies
Exam Duration: 45 Mins Total Questions : 30
Which of the following statement about Fjord is incorrect?
- (a)
Most Fjords were formed due to raise in sea level after the melting of Pleistocene ice
- (b)
It is an emergent coast that was originally submerged
- (c)
It is a long narrow inlet of the sea bound by steep slopes
- (d)
It is a glaciated valley that has been inumdated by the sea
Residence time of water molecule in the ocean is:
- (a)
3.5 years
- (b)
3.5 million years
- (c)
35 years
- (d)
35000 years
Materials required to prepare a food item are called
- (a)
Nutrients
- (b)
Ingredients
- (c)
Nourishments
- (d)
Minerals
What is the primary effect of excess phosphorous in the aquatic environment called?
- (a)
Fixation
- (b)
Nitrification
- (c)
Eutrophication
- (d)
Radiation
Coliform bacteria in water are an indication of the presence of --------.
- (a)
Radioactive wastes
- (b)
Excess fertilizer
- (c)
Decaying animals and plants
- (d)
Human faeces
Medicine of quinine is provided by
- (a)
Eucalyptus plant
- (b)
aconite plant
- (c)
cinchona plant
- (d)
money plant
Process through which plants reproduce:
- (a)
Eating
- (b)
Evaporation
- (c)
Pollination
- (d)
Condensation
What is considered a life-giving and life-supporting system in Vedic literature?
- (a)
Rain
- (b)
Cloud
- (c)
Stream
- (d)
River
Which aquatic animal was released on a large scale in the Ganga to rid it of waste flesh?
- (a)
Gharial
- (b)
Turtle
- (c)
Dolphin
- (d)
Fishes
Which animal never lands on it's back?
- (a)
Wolf
- (b)
Squirrel
- (c)
Dog
- (d)
Cat
In a lake polluted with pesticides, which one of the following will contain the maximum amount of pesticides?
- (a)
small fish
- (b)
microscopic animals
- (c)
big fish
- (d)
water birds
Name the substance whose accumulation in pelicans of Lake Michigan led to the formation of thin shells of their eggs.
- (a)
CFC
- (b)
PAN
- (c)
DDT
- (d)
PAC
Group of individuals of the same species that share common attributes are called:
- (a)
Community
- (b)
Population
- (c)
Ecotype
- (d)
Society
Which one of the following statements regarding EI-NINO is NOT true?
- (a)
It is an extension of equatorial current towards the western coast of South America.
- (b)
It is an occasional warm current leading to an increase of about 10o C in subsurface water temperature.
- (c)
It develops as temporary replacement of usual cold Peruvian Current.
- (d)
It causes an increase in plankton thriving in cold Peruvian current.
Why do camels have a long neck?
- (a)
more vertebrae
- (b)
vertebral plates between adjoining vertebrae
- (c)
increase in size of each vertebra
- (d)
cartilage pads between vertebra
Which one of the following animals shows discontinuous distribution?
- (a)
Green muscles
- (b)
Bats
- (c)
Lung fishes
- (d)
Pacific salmons
The animals which eat only plants are called
- (a)
Herbivores
- (b)
Carnivores
- (c)
Omnivores
- (d)
Insectivores
Diffusion of water through semipermeable membrane from dilute solution to concentrated solution is
- (a)
Imbibition
- (b)
Osmosis
- (c)
Plasmolysis
- (d)
Necrosis
Cell wall of root hair has two layers outer and inner which are made up of
- (a)
Pectin and lignin respectively
- (b)
Pectin and cellulose respectively
- (c)
Cellulose and pectin respectively
- (d)
Lignin and cellulose respectively
A cell increase in volume when it is placed to
- (a)
Hypertonic solution
- (b)
Hypotonic solution
- (c)
Isotonic solution
- (d)
None of these
Root pressure is measured by
- (a)
Barometer
- (b)
Atmometer
- (c)
Manometer
- (d)
Auxanometer
Maximum root pressure is observed when
- (a)
Transpiration and absorption are very low
- (b)
Transpiration and absorption very high
- (c)
Transpiration is high and absorption is low
- (d)
Transpiration is low and absorption is high
The existence of root pressure can be demonstrated by
- (a)
Exudation or bleeding
- (b)
Wilting
- (c)
Transpiration
- (d)
Bleeding
What will be the outcome of Eutrophication of surface waters?
- (a)
Overproduction of biomass
- (b)
Decrease in nitrogen concentration
- (c)
Decrease in phosphorus concentration
- (d)
Decrease in both nitrogen and phosphorus concentrations.
The loss of water in the form of water droplets is called
- (a)
Transpiration
- (b)
Guttation
- (c)
Evaporation
- (d)
Bleeding
The least preferred technique in the disposal of municipal solid waste is:
- (a)
Incineration
- (b)
composting
- (c)
land filling
- (d)
bricketting
Stomatal opening is based on
- (a)
Exosmosis
- (b)
Endomosis
- (c)
Plasmolysis in guard cells
- (d)
Decrease in concentration of cell sap
Which of the following disease is not the caused by water pollution?
- (a)
Typhoid
- (b)
Dysentery
- (c)
Malaria
- (d)
Jaundice
Goitre: swelling of thyroid glands occurs due to the deficiency of ----.
- (a)
iron
- (b)
pottasium
- (c)
phosphorus
- (d)
iodine
Which of the following is considered as 'body building foods'?
- (a)
Proteins
- (b)
Vitamins
- (c)
Fats
- (d)
Carbohydrates