1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
The Earth summit held in Rio de Janeiro in 1992 was called :
A
to assess threat posed to native species by invasive weed species
B
for immediate steps to discontinue use of CFCs that were damaging the ozone layer
C
to reduce CO2 emissions and global warming
D
for conservation of biodiversity and sustainable utilization of its benefits
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Match Column-I with Column –II.

Column - I Column - II
(a) Saprophyte (i) Symbiotic association
or fungi with plant roots
(b) Parasite (ii) Decomposition of dead
organic materials
(c) Lichens (iii)Living on living plants of animals
(d) Mycorrhiza (iv) Symbiotic association of algae and fungi


Choose the correct answer from the options given below :
A
(a) (b) (c) (d)
(i) (ii) (iii) (iv)
B
(a) (b) (c) (d)
(iii) (ii) (i) (iv)
C
(a) (b) (c) (d)
(ii) (i) (iii) (iv)
D
(a) (b) (c) (d)
(ii) (iii) (iv) (i)
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Which of the following is the most important cause for animals and plants being driven to extinction?
A
Economic exploitation
B
Alien species invasion
C
Habitat loss and fragmentation
D
Drought and floods
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Which of the following ecological pyramids is generally inverted?
A
Pyramid of biomass in a forest
B
Pyramid of biomass in a sea
C
Pyramid of numbers in grassland
D
Pyramid of energy
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