Question No:1
The salt concentration is measured as salinity in parts per ______.
[A] a) Billion
[B] Million
[C] Hundred
[D] Thousand
Question No:2
The salinity of inland waters is ______
[A] 3
[B] 4
[C] 5
[D] 2
Question No:3
The salinity of sea water is _______
[A] > 100
[B] 30-35
[C] 60-80
[D] 10-15
Question No:4
The salinity of a hyper saline lagoon is
[A] Upto103
[B] >103
[C] Upto102
[D] >102
Question No:5
The organisms which are tolerant of a wide range of salinities are
[A] Salinotrophs
[B] Euryhaline
[C] Salinosomes
[D] Stenohaline
Question No:6
The organisms which are restricted to a narrow range of salinity are known as
[A] Salinosomes
[B] Salinotolerants
[C] Euryhaline
[D] Stenohaline
Question No:7
Fresh water animals cannot live for long in sea water because they would face problems of
[A] Vapour pressure
[B] Purity
[C] Osmotic
[D] Thermal change
Question No:8
Assertion: Photosynthesis is an essential life process of plants.
Reason: Small plants growing in forest are adapted to other process than photosynthesis because they are over-shadowed l_, tall canopied trees. .
[A] A is true and R is also true
[B] R is true and A is false
[C] A is true but R is false
[D] Both A and R are false
Question No:9
For many animals, light is an important factors which regulates _______ variations,
[A] Nocturnal
[B] Diurnal
[C] Urinal
[D] Crepuscular
Question No:10
The activities of animals like foraging, reproductive and migratory depend on
[A] Temperature
[B] Water
[C] Light
[D] Air
Question No:11
Marine organisms, which live at a depth of > m, receive solar energy in which form?
[A] Different rays from visible spectrum
[B] UV radiations
[C] Cosmic rays
[D] Infra Red radiations
Question No:12
The factors which affect percolation and water holding capacity of soil are
[A] Soil composition
[B] Grain size
[C] Aggregation
[D] All of the above
Question No:13
Vegetation in any area depends on
[A] pH of soil
[B] Mineral composition
[C] Topography
[D] All of the above
Question No:14
The ______ characteristics often determine the type of benthic animals than can thrive there
[A] Composition
[B] Sediment
[C] Grain size
[D] Water holding capacity
Question No:15
The internal environment of an organism is called
[A] Equilibrium
[B] Organostasis
[C] Homeostasis
[D] Apoptosis
Ecology Organism and Population Mock Test-3
CategoriesNEET Biology