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

Biodiversity should be conserved as it plays a major role in many ecosystem services that nature provides. Such an argument is called:

The search for previously unknown compounds in organisms that have never been used in traditional medicine is known as:

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

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

Extinction of Stellar’s sea cow and passenger pigeon was due to:

What exotic introduction is threatening indigenous catfishes in our rivers?

Introduction of Lates niloticus led to the extinction of:

Loss of biodiversity may lead to all except:

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