1
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

Choose the correct statements with reference to organic evolution.

I. Flippers of whale and wings of bat exhibit analogy.

II. Wings of butterfly and wings of bird exhibit homology.

III. Organs with dissimilar structure are called analogous organs.

IV. Organs with similar structure and origin are called homologous organs.

A
I and IV
B
I and III
C
III and IV
D
II and IV
2
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

The peppered moth (Biston betularia), the black-coloured form becomes dominant over the light-coloured form of moth in England during industrial revolution. This is an example of

A
appearance of the darker-coloured individuals due to very poor sunlight
B
protective mimicry
C
inheritance of darker colour character acquired due to the darker environment
D
natural selection whereby the darker forms were selected
3
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

What is true about the isolated small tribal populations?

A
Wrestlers who develop strong body muscles in their lifetime pass this character on their progeny
B
There is no change in population size as they have a large gene pool
C
There is a decline in population as boys marry girls only from their own tribe
D
Hereditary diseases like colour blindness do not spread in the isolated population
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