1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Haploids are more suitable for mutation studies than the diploids. This is because:
A
all mutations, whether dominant or recessive are expressed in haploids
B
mutagens penetrate in haploids more effectively than in diploids
C
haploids are reproductively more stable than diploids
D
haploids are more abundant in nature than diploids
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Trichoderma harzianum has proved a useful microorganism for:
A
biological control of soil-borne plant pathogens
B
reclamation of wastelands
C
gene transfer in higher plants
D
bioremediation of contaminated soils
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Nitrogen fixation in root nodules of Alnus is brought about by:
A
Bradyrhizobium
B
Frankia
C
Clostridium
D
Azorhizobium
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Which one of the following proved effective for biological control of nematodal disese in plants?
A
Pisolithus tinctorius
B
Paecilomyces lilacinus
C
Pseudomonas cepacia
D
Gliocladium virens
EXAM MAP