1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Thermococcus, Methanococcus and Methanobacterium exemplify
A
backteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria
B
bacteria that contain a cytoskeleton and ribosomes
C
archaebacteria that contain protein homologous to eukaryotic core histones
D
archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled.
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Which one of the following in birds, indicates their reptilian ancestry?
A
Two special chambers crop and gizzard in their digestive tract
B
Eggs with a calcareous shell
C
Scales on their hind limbs
D
Four-chambered heart
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
In which one of the following male and female gametophytes do not have free living independent existance?
A
Polytrichum
B
Cedrus
C
Pteris
D
Funaria
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Ascaris is characterized by
A
presence of true coelom but absence of metamerism
B
presence of true coelom and metamerism (metamerisation)
C
absence of true coelom but presence of metamerism
D
presence of neither true coelom nor metamerism.