71.
The deficiencies of micronutrients, not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport: A
$$Co, Ni, Mo$$
B
$$Ca, K, Na$$
C
$$Mn, Co, Ca$$
D
$$Cu, Mn, Fe$$
Answer :
$$Cu, Mn, Fe$$
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72.
All mineral salts are absorbed in cells as A
Ions
B
Atoms
C
Molecules
D
All of the above
Answer :
Ions
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73.
Which one is not related with plant ash A
Trace elements
B
Essential elements
C
Nitrogen
D
Mineral elements
Answer :
Nitrogen
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74.
Which one of the following is correctly matched ? A
Passive transport of nutrients - ATP
B
Apoplast - Plasmodesmata
C
Potassium - Readily immobilisation
D
Bakane of rice seedlings - F. Skoog
Answer :
Potassium - Readily immobilisation
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75.
The medicine which is useful for the prevention of extra bleeding after the birth of the child A
Morphine
B
Reserpine
C
Quinine
D
Serpentine
Answer :
Reserpine
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76.
What is the pharmalogical significance of turmeric A
Carminative & stimulant
B
Tonic & Blood purifier
C
Antioxidant & Anti parasitic for skin infection
D
All of the above
Answer :
All of the above
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77.
Which one of the following elements plays an important role in biological nitrogen fixation A
Molybdenum
B
Manganese
C
Copper
D
Zinc
Answer :
Molybdenum
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78.
One of the free -living, anaerobic nitrogen - fixer is: A
Beijernickia
B
Rhodospirillum
C
Rhizobium
D
Azotobacter
Answer :
Rhodospirillum
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79.
Which one of the following is not a micronutrient? A
Molybdenum
B
Magnesium
C
Zinc
D
Boron
Answer :
Magnesium
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80.
Asafoetida is obtained from A
Exudation from stem
B
Extraction from fruit
C
Exudation from root.
D
Extraction from leaves
Answer :
Exudation from root.
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