Match each item in Column I with one in column II and select the correct answer from the codes given:

	COLUMN I		COLUMN II
A	Dodo	P	Bird
B	Thylacine	Q	Zebra
C	Quagga	R	Marsupial
D	Steller’s sea cow	S	Aquatic mammal

Codes:

	A	B	C	D
1.	P	Q	R	S
2.	P	Q	S	R
3.	P	R	Q	S
4.	S	R	Q	P

Given below are the characteristics used in explaining higher biodiversity in tropics. Identify the one/s that is/are correctly matched:

Biodiversity hotspots are characterized by:
1. High number of endemic species and low threat of extinction
2. Low number of endemic species and low threat of extinction
3. Low number of endemic species and high threat of extinction
4. High number of endemic species and high threat of extinction

What is common to Lates niloticus, Lantana Camara, and Parthenium hysterophorus?
1. They all have caused the extinction of a large number of indigenous species in India.
2. They have been extinct in the wild in the past 200 years.
3. Transgenic varieties of these organisms are used to harvest therapeutic products.
4. They are all examples of alien species that have become invasive in some environments where they were introduced.

David Tilman conducted long-term ecosystem experiments using outdoor plots. His findings include:

Ramsar Convention provides the framework for national action and international cooperation for the conservation of:

Which of the following recently extinct animals was one of the largest carnivorous marsupials?

Extinction of species has been always there on the earth but the current extinction is of more concern because:

Consider the two statements:

I. Biological control by an introduced control can affect biodiversity.
II. An introduced control does not always target only the intended pest species; it can also target native species.

1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct but II is incorrect.
4. Both I and II are incorrect.

Consider the two statements:
I. Ex situ conservation is rarely enough to save a species from extinction.
II. It is to be used as a last resort, or as a supplement to in situ conservation

1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. Both I and II are incorrect.
4. Only I is correct.