Identify the incorrect statement amongst the following:
1. Phosphorus is obtained by the plants from the soil in the form of phosphates
2. Nitrogen is obtained from the soil in the form of nitrates , nitrites and ammonium salts
3. Sulphur is mainly obtained by plants as sulphur dioxide by foliar absorption
4. Boron is absorbed in the form of borate ions
is an activator of the enzyme:
1. RuBisCO | 2. PEP carboxylase |
3. Nitrogenase | 4. Alcohol dehydrogenase |
A plant requires magnesium mainly for:
1. DNA replication | 2. Synthesizing enzymes |
3. Synthesizing hormones | 4. Synthesizing chlorophyll |
Which of the following elements is a constituent of vitamins such as thiamine, biotin and Coenzyme A?
1. Calcium | 2. Sulfur |
3. Iron | 4. Phosphorus |
The two elements required for splitting of water to liberate oxygen during photosynthesis are:
1. Manganese and Chlorine
2. Manganese and Boron
3. Copper and Chlorine
4. Molybdenum and Magnesium