1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Which one of the following types organisms occupy more than one trophic level in a pond ecosystem ?
A
Phytoplankton
B
Zooplankton
C
Frog
D
Fish
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The correct sequence of plants in hydrosere is :
A
Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak
B
Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana
C
Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus
D
Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
The slow rate of decomposition of fallen logs in nature is due to their:
A
low moisture content
B
poor nitrogen content
C
anaerobic environment around them
D
low cellulose content
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
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)
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