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71
The plants that are capable of fixing nitrogen directly from the atmosphere include
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Answer: Option B
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72
Perfectly even flow, in which water particles move parallel to one another, is called
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Answer: Option B
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73
North Indian upper alluvial savannah is also known as
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Answer: Option A
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74
Which of the following imparts black stripes running down the rocks of some hills and indicates thereby the type of algal vegetation?
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Answer: Option A
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75
An element present in Chlorophyll is
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Answer: Option C
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76
Two guanosine triphosphate (GTP) molecules are generated in the Krebs cycle via the reaction
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Answer: Option C
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77
When the diseased stem of sugarcane is splitted open during the early stages ofthe red-rot disease.
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Answer: Option C
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78
Which of the following countries has the highest number of livestock in the world although their productivity is very poor?
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Answer: Option A
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79
Consider the following statements regarding the germination of pollen grain and choose the correct answer:
1. The content of the pollen is a true male gametophyte
2. The pollen tube comes out due to the protrusion of the exine through the germ pore
3. When the pollen grain has germinated, the pollen tube penetrates the stigma through the stigmatic papillae
4. Some stigmas have a continuous cuticle in which pollen tubes penetrate by enzyme action
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Answer: Option C
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80
Savannah forest of Burma is also known as
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Answer: Option B
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