Biology Causes Biodiversity Losses Online Exam Quiz
Biology Causes Biodiversity Losses GK Quiz. Question and Answers related to Biology Causes Biodiversity Losses. MCQ (Multiple Choice Questions with answers about Biology Causes Biodiversity Losses
Previously how much of the Earth’s land surface was covered by the tropical rain forests?
Options
A : 50 %
B : 14 %
C : 24 %
D : 35 %
Currently, how much area of the Earth’s land surface is covered by the tropical rain forests?
Options
A : 90 %
B : 50 %
C : 1 %
D : 6 %
What does ‘The Evil Quartet’ describes?
Options
A : An increase in the number of species
B : The decrease in the number of species
C : Mass extinction
D : Formation of the universe
Which phenomenon explains that ‘When a species becomes extinct, the plant and animal species also become extinct that are obligatorily associated with the host species’?
Options
A : Aquaculture
B : Fragmentation
C : Invasion
D : Co-extinction
Which phenomenon does the coevolved plant-pollinator mutualism explain?
Options
A : Co-extinction
B : Fragmentation
C : Invasion
D : Loss of habitat
What was the reason for the exploitation of the Steller’s sea cow and the passenger pigeon?
Options
A : Competition
B : Loss of habitat
C : Human activities
D : Mutualistic relationships
What happens when alien species are introduced unintentionally or deliberately?
Options
A : Decrease of alien species
B : Increase in habitat
C : They turn invasive and cause increase species
D : They turn invasive and cause decline or extinction of indigenous species
Which animals are badly affected when a large habitat is broken up into small fragments due to various human activities?
Options
A : Extinct species
B : Migratory species
C : Non-migratory species
D : Humans
What happened when the Nile perch introduced into Lake Victoria in east Africa?
Options
A : Extinction of trees
B : Increase in the number of trees
C : Extinction of cichlid fish
D : Increase in the number of cichlid fish
Why was the African catfish Clarias gariepinus introduced?
Options
A : Horticulture
B : Aquaculture
C : Sericulture
D : Poultry
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