1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
What is antisense technology?
A
RNA polymerase producing DNA
B
Production of somaclonal variants in tissue cultures
C
When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene
D
A cell displaying a foreign antigen used for synthesis of antigens
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
A country with a high rate of population growth took measures to reduce it. The figure below shows age-sex pyramids of populations A and B twenty years apart. Select the correct interpretation about them : –
AIPMT 2009 Biology - Organisms and Populations Question 44 English
A
"A" is more recent shows slight reduction in the growth rate
B
"B" is more recent showing that population is very young
C
"A" is the earlier pyramid and no change has occurred in the growth rate
D
"B" is earlier pyramid and shows stabilized growth rate
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :
A
Xerophytes
B
Epiphytes
C
Hydrophytes
D
Mesophytes
4
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
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