211.
Oxygen in atmosphere has been formed by A
Evaporation of water
B
Photosynthesis of plants
C
Metabolism of microorganisms
D
Decaying organisms
Answer :
Photosynthesis of plants
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212.
In general, in the developmental history of a mammalian heart, it is observed that it passes through a two-chambered fish-like heart, three- chambered frog-like heart and finally to four- chambered stage. To which hypothesis can this above cited statement be approximated? A
Hardy-Weinberg Law
B
Lamarck's Principle
C
Biogenetic Law
D
Mendelian Principles
Answer :
Biogenetic Law
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213.
Evolution of man was possible because our apelike ancestors A
Showed bipedal movement on open land
B
Used fire
C
Felt difficulty in nutrition
D
Developed community hunting
Answer :
Showed bipedal movement on open land
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214.
Wings of locust, pigeon, and bat are example of A
Vestigial organs
B
Analogous organs
C
Homologous organs
D
Exoxkeleton
Answer :
Analogous organs
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215.
Which of the following set has homologous organs A
Hands of man, monkey and kangaroo and trunk of elephant
B
Wings of insects, birds and bats
C
Hind limbs of grasshopper, horse and bat
D
Mouthparts of cockroach, quo and noney bee
Answer :
Mouthparts of cockroach, quo and noney bee
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216.
Which character applies to Homo sapiens A
Opposable toe
B
Large canine
C
Cranial capacity 1450 cc
D
Chin prominence absent
Answer :
Cranial capacity 1450 cc
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217.
What is most important for origin of life A
Carbon
B
Oxygen
C
Water
D
Nitrogen
Answer :
Water
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218.
Who wrote the book 'Genetics and origin of species' which deals with synthetic theory o fevilution A
Dobzhansky
B
Haldane
C
Mayer
D
De Viries
Answer :
Dobzhansky
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219.
Which scientist gave the 'Theory of Continuity of Germplasm A
Weismann
B
Mendel
C
Lamarck
D
Darwin
Answer :
Weismann
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220.
According to recapitulation theory A
Every animal being as an egg
B
Damaged body parts are formed new
C
Offsprings are like parents
D
Ontogeny repeats plylogeny
Answer :
Ontogeny repeats plylogeny
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