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For students in search of
- Hydroponic Gardening
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Guides - Basics to Experts level
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Growing fruit and vegetables hydroponically
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Practical daily questions or queries of hydroponics lovers
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Current Hydroponics and Indoor Gardening Market Growth as well as Trends
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221. |
Which one of the following pairs of elements and the mineral from which they are obtained is not correctly matched? |
A. |
Sulphur - Pyrite |
B. |
Boron - Siderite |
C. |
Zinc - Calamine |
D. |
Copper - Malachite |
Answer: Option B
Explanation:
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222. |
Maximum absorption of water by roots takes place through the : |
A. |
Zone of elongation |
B. |
Zone of maturation |
C. |
Root hair |
D. |
Root cap |
Answer: Option C
Explanation:
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223. |
Maximum population of microorganisms found in soils is of: |
A. |
Bacteria |
B. |
Fungi |
C. |
Actinomycetes |
D. |
Viruses |
Answer: Option A
Explanation:
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224. |
Mg and S are termed as: |
A. |
Primary nutrients |
B. |
Micronutrients |
C. |
Ultra micronutrients |
D. |
Secondary nutrients |
Answer: Option D
Explanation:
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225. |
Mica is: |
A. |
1:1 type clay mineral |
B. |
2:1 type clay mineral, non expandable |
C. |
2:2 type clay mineral, L is present inside the layer |
D. |
None of the above |
Answer: Option B
Explanation:
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226. |
Microbial population of a soil in general |
A. |
Decreases with depth |
B. |
Increases with depth |
C. |
Constant throughout the profile |
D. |
No specific trend |
Answer: Option A
Explanation:
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227. |
Mineralization of N refers to the conversion of : |
A. |
Organic form into inorganic form |
B. |
Inorganic form into organic form |
C. |
Organic form to nitrogenous compound |
D. |
All of the above |
Answer: Option A
Explanation:
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228. |
Moisture content from lower upper plastic limit is known as: |
A. |
Sticky point |
B. |
Field capacity |
C. |
Plastic number |
D. |
All of the above |
Answer: Option C
Explanation:
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229. |
Molybdenum is a component of: |
A. |
Chlorophyll |
B. |
Nitrogenase enzyme |
C. |
Cell wall of plants |
D. |
None of the above |
Answer: Option B
Explanation:
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230. |
Montmorillonite is following type of clay mineral: |
Answer: Option D
Explanation:
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