Consider the following statements concerning
food chains:
(i) Removal of 80% tigers from an area resulted
in greatly increased growth of vegetation
(ii) Removal of most of the carnivores resulted
in an increased population of deers
(iii) The length of food chains is generally
limited to 3-4 trophic levels due to energy
loss
(iv) The length of food chains may vary from 2
to 8 trophic levels
Which of two of the above statements are correct ?
A
(iii), (iv)
B
(ii), (iii)
C
(i), (iv)
D
(i), (ii)
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
The table below gives the populations
(in thousands) of ten species (A-J) in four areas
(a-d) consisting of the number of habitats given
within brackets against each. Study the table
and answer the question which follows:
Which area out of a to d shows maximum
species diversity?
A
b
B
d
C
c
D
a
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Which one of the following is not observed in
biodiversity hotspots ?
A
Endenism
B
Lesser inter-specific competition
C
Accelerated species loss
D
Species richness
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
World Summit on Sustainable Development
(2002) was held in: