When a threatened plant needs urgent measures to save it from extinction, the desirable approach is:

1. in-situ conservation 2. ex-situ conservation
3. cryopreservation 4. biopreservation

Subtopic:  Ex Situ Conservation of Biodiversity |
 62%
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Biodiversity should be conserved as it plays a major role in many ecosystem services that nature provides. Such an argument is called:

1. broadly utilitarian 2. narrowly utilitarian
3. ethical 4. moral
Subtopic:  Importance of Biodiversity |
 68%
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The search for previously unknown compounds in organisms that have never been used in traditional medicine is known as:

1. Biopiracy 2. Bioprospecting
3. Molecular pharming 4. Bioremediation
Subtopic:  Importance of Biodiversity | In Situ Conservation of Biodiversity | Ex Situ Conservation of Biodiversity |
 66%

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What percentage of total oxygen in the earth’s atmosphere is produced by Amazon rainforest through photosynthesis?

1. 50 2. 40
3. 30 4. 20
Subtopic:  Importance of Biodiversity |
 70%
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The most important cause of the loss of biodiversity today is the:
1. Habitat loss and fragmentation
2. Overexploitation
3. Alien species invasion
4. Co-extinctions

Subtopic:  Loss of Biodiversity |
 90%
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Extinction of Stellar’s sea cow and passenger pigeon was due to:

1. Habitat loss and fragmentation 2. Over exploitation
3. Invasion of alien species 4. Co-extinctions
Subtopic:  Loss of Biodiversity |
 80%
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What exotic introduction is threatening indigenous catfishes in our rivers?

1. Carassius auratus 2. Carcinus maenas
3. Centaurea solstitialis 4. Clarias gariepinus
Subtopic:  Loss of Biodiversity |
 85%
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Introduction of Lates niloticus led to the extinction of:

1.Gambusia2.Pupfish
3.Cichlid fish4.Chinook salmon

Subtopic:  Loss of Biodiversity |
 71%

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Loss of biodiversity may lead to all except:
1. decline in plant production
2. increased resistance to environmental perturbance
3. increased variability in water use
4. increased variability in pest and disease cycle

Subtopic:  Loss of Biodiversity |
 70%
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The main difference between the “Sixth Extinction” and the previous five extinctions is that the sixth extinction:
1. is mainly occurring on islands
2. is mainly affecting plants
3. is occurring at a faster rate
4. does not involve human activities

Subtopic:  Loss of Biodiversity |
 84%
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