41.
Which one of the following includes all homologous organs?
A
The wing of butterfly, wing of bird, wing (patagia) of bat
B
The fore limb of frog, wing of bird and fore limb of rabbit
C
The thoracic leg of cockroach, the hind leg of frog and fore leg of rabbit
D
The wing of bird, wing of bat and wing of flying lizard
Answer :
The fore limb of frog, wing of bird and fore limb of rabbit
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
42.
Which one of the following scientists name is correctly matched with the theory put forth by him?
A
Weismann - Theory of continuity of Germplasm
B
Pasteur - Inheritance of acquired characters
C
De Vries - Natural selection
D
Mendel - Theory of Pangenesis
Answer :
Weismann - Theory of continuity of Germplasm
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
43.
Two geographical regions separated by high mountains are
A
Oriental and Australian
B
Palaearctic and Oriental
C
Nearctic and Palaearctic
D
Neotropical and Ethiopian
Answer :
Palaearctic and Oriental
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
44.
Jurassic period of the mesozoic era was characterised by
A
Radiation of reptiles and origin of mammal-like reptiles
B
Dinosaurs become extinct and Angiosperms appeared
C
Flowering plants and first dinosaurs appeared
D
Gymnosperms were dominant plants and first birds appeared
Answer :
Gymnosperms were dominant plants and first birds appeared
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
45.
In the case of peppered moth (Biston betularia) the black - coloured form became dominant over the light- coloured form 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
Answer :
natural selection whereby the darker forms were selected
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
46.
Parallelism is
A
adaptive divergence
B
adaptive divergence of widely separated species
C
adaptive convergence of widely different species
D
adaptive convergence of closely related groups
Answer :
adaptive convergence of closely related groups
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
47.
There is no life on moon due to the absence of
A
$${O_2}$$
B
water
C
light
D
temperature
Answer :
water
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
48.
Change with desent in the basis of which theory
A
Recapitulation theory
B
Oparin's theory
C
Theory of organic evolution
D
Cell theory
Answer :
Theory of organic evolution
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
49.
Correct order is
A
Palaeozoic $$ \to $$ Archaeozoic $$ \to $$ Coenozoic
B
Archaeozoic $$ \to $$ Palaeozoic $$ \to $$ Proterozoic
C
Palaeozoic $$ \to $$ Mesozoic $$ \to $$ Coenozoic
D
Mesozoic $$ \to $$ Archaeozoic $$ \to $$ Proterozoic
Answer :
Palaeozoic $$ \to $$ Mesozoic $$ \to $$ Coenozoic
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
50.
Fossil X can be considered to have evolved earlier than fossil Y if
A
Y has vestigial structures that are homologous to functional structures in fossil X
B
Y is structurally more complex than fossil X
C
Y is in better state of preservation than X
D
X is found in lower stratum of undisturbed sedimentary rock than Y
Answer :
Y has vestigial structures that are homologous to functional structures in fossil X
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.