Which of the following does not contain metal:
1.  Glycoproteins
2.  Ferritin
3.  Cytochromes
4.  Chromoproteins

Plants take zinc in the form of:

Cytochrome is:
1.  Metallo flavo protein
2.  Fe containing porphyrin pigment
3.  Glycoprotein
4.  Lipid

The major role of minor elements inside living organisms is to act as:
1. Co-factors of enzymes
2. Building blocks of important amino acids
3. Constituent of hormones
4. Binder of cell structure

Which element is located at the center of the porphyrin ring in chlorophyll?

Which one of the following mineral elements plays an important role in biological nitrogen fixation:
1. Copper
2. Manganese
3. Zinc
4. Molybdenum

In which one of the following nitrogen is not a constituent:

1. Idioblast

2. Bacteriochlorophyll

3. Invertase

4. Pepsin

Boron in green plants assists in:
1. Activation of enzymes
2. Acting of enzyme cofactor
3. Photosynthesis
4. Sugar transport

The deficiencies of micronutrients, not only affect the 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:

1. Ca, K, Na

2. Co, Ni, Mo

3. Mn, Co, Ca

4. Cu, Mn, Fe