71.
Animals not possessing a fixed temperature are called
A
Homeotherms
B
Mexotherms
C
Poikilotherms
D
Heterotherms
Answer :
Poikilotherms
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72.
Which of the following plant group has evolved recently
A
Ferns
B
Gymnosperms
C
Grasses
D
Mosses
Answer :
Grasses
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73.
Azolla is used in the cultivation of
A
Maize
B
Sorghum
C
Wheat
D
Rice
Answer :
Rice
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74.
A plant in which vascular elements are present and formation of seed occur without fruit. In which of the following you will place this plant
A
Angiosperm
B
Gymnosperm
C
Bryophytes
D
Pteridophytes
Answer :
Gymnosperm
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75.
For declaration of new species of higher plants what characters are used
A
Floral character of new species
B
Anatomical characters of new species
C
Physiological character of new species
D
Character of endosperm
Answer :
Floral character of new species
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76.
Individuals of some species having genetic variation and occur in same environment are called
A
Biotypes
B
Ecotype
C
Ecophenes
D
Ecads
Answer :
Biotypes
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77.
Anabaena is associated with Azolla's
A
Stem
B
Leaves
C
Roots
D
Flowers
Answer :
Leaves
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78.
Darwing's Book "Origin of new species" was published in
A
1819
B
1859
C
1857
D
1869
Answer :
1859
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79.
Homeostasis refers to
A
Positive and negative feedback
B
Positive feedback
C
Negative feedback
D
None of the above
Answer :
Positive and negative feedback
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80.
True alternation of generation is absent in E.Coli due to absent of
A
Syngamy
B
Reduction division
C
Chromosome
D
Nucleus
Answer :
Syngamy
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