The plant ash is an indication of :
organic matter of plant
waste product
mineral salts absorbed by plants
none of these
Hydroponics is
cultivation of plants in water
growth of plants towards water
growth of plants away from water
soil less cultivation of plants
When one element is involved in opening and closing of stomata, the other helps to maintain the ribosome structure. They are
Potassium and calcium
Phosphorus and sulphur
Potassium and magnesium
Iron and magnesium
Iron and magnesium
Which of the following groups of minerals are micronutrients?
Magnesium, Manganese, Copper, Boron and Phosphorus
Manganese, Copper, Magnesium, Zinc and Boron
Nitrogen, Potassium, Manganese, Copper and Iron
Iron, Manganese, Copper, Molybdenum and Zinc
Iron, Manganese, Copper, Molybdenum and Zinc
Match the mineral in Column I with the enzyme activated in
Column II and choose the correct option.
Column I | Column II |
(A) Magnesium | (1) Alcohol dehydrogenase |
(B) Molybdenum | (2) Phosphoenolpyruvate carboxylase |
(C) Zinc | (3) Nitrogenase |
A - 2; B - 3; C - 1
A - 1; B - 2; C - 3
A - 2; B - 1; C - 3
A - 3; B - 2; C - 1
A - 3; B - 2; C - 1
Free living nitrogen fixing aerobic bacterium is
Rhodospirillum
Anabaena
Nostoc
Beijernickia
Beijernickia
Match the Column I with that of Column II and choose the correct combination from the options given
Column I- Essential elements | Column II- Deficiency causes |
A. N, K, Mg, S, Fe, Mn, Zn, and Mo | 1. Inhibit cell division |
B. N, K, S and Mo | 2. Necrosis |
C. Ca, Mg, Cu and K | 3. Delay in flowering |
D. N, S and Mo | 4. Chlorosis |
A - 4; B - 3; C - 2; D - 1
A - 1; B - 2; C - 3; D - 4
A - 4; B - 1; C - 2; D - 3
A - 2; B - 3; C - 4; D - 1
A - 2; B - 3; C - 4; D - 1
C.
A - 4; B - 1; C - 2; D - 3
Column I- Essential elements | Column II- Deficiency causes |
A. N, K, Mg, S, Fe, Mn, Zn, and Mo | 4. Chlorosis |
B. N, K, S and Mo | 1. Inhibit cell division |
C. Ca, Mg, Cu and K | 2. Necrosis |
D. N, S and Mo | 3. Delay in flowering |
Which of the following is not a role played by potassium in plant growth?
Translocation of carbohydrates
Maintaining anion-cation balance
Opening and closing of stomata
Synthesis of protein
Synthesis of protein