Description : In cabbage, cauliflower and broccoli, hollow stems with darkened interiors are most often caused by? (Agriculture MCQ) [a] Calcium deficiency [b] Chilling temperatures [c] Boron deficiency [d] Magnesium deficiency [e] Zinc deficiency
Last Answer : [c] Boron deficiency
Description : Disease caused by Zn deficiency is (A) Khaira (B) Mosaic (C) Die-back (D) Whip tail
Last Answer : (A) Khaira
Description : Sunflower is also known as an individual plant for the deficiency of (A) Nitrogen (B) Zinc (C) Boron (D) Potash
Last Answer : (A) Nitrogen
Description : The khaira disease of rice is caused due to deficiency of which of the following? [a] Zinc [b] Nickel [c] Nitrogen [d] Sulphur [e] None of the above
Last Answer : [d] Sulphur
Description : In which of the following all three are macronutrients? (a) Molybdenum, magnesium, manganese (b) Nitrogen, nickel, phosphorus (c) Boron, zinc, manganese (d) Iron, copper, molybdenum
Last Answer : (d) Iron, copper, molybdenum
Description : Fruit cracking disease in Pomegranate is caused due to the deficiency of - a) Zinc b) Iron c) Boron d) Sulphar
Last Answer : c) Boron
Description : Which element is involved in biosynthesis of IAA ? (A) Nitrogen (B) Boron (C) Zinc (D) Copper
Last Answer : (C) Zinc
Description : What is the main function of zinc in the plants ? (A) Synthesis of nitrogen (B) Synthesis of phosphorus (C) Required for synthesis of Tryptophos (D) To increase activity of the boron
Last Answer : (C) Required for synthesis of Tryptophos
Description : Khaira disease in rice is due to the deficiency of (A) Boron (B) Mn (C)S (D) Zn
Last Answer : (D) Zn
Description : Sugar-beet is an indicator plant for (A) Sodium (B) Molybdenum (C) Zinc (D) Phosphorus
Last Answer : (A) Sodium
Description : Which one of the following element is mobile in plants but immobile in soil ? (A) Sulphur (B) Zinc (C) Boron (D) Phosphorus
Last Answer : (D) Phosphorus
Description : The necrotic ring spot disease of stone fruits (cherry, peach, plum, etc.) is caused by (a) a bacterium (b) fungal infection (c) molybdenum deficiency (d) virus
Last Answer : Ans:(d)
Description : In citrus plant, die back diseases is the result of deficiency of (a) N (b) P (c) Boron (d) Copper
Last Answer : (d) Copper
Description : The water core disease of apples is caused by (a) boron deficiency (b) bacterial infection (c) fungal infection (d) high temperatures
Description : Yellow spots on citrus leaves is due to the deficiency of: (1) Zinc (2) Magnesium (3) Boron (4) Iron
Last Answer : Magnesium
Description : Which one of the following mineral elements play an important role in biological nitrogen fixation a. Copper b. Magnesium c. Zinc d. Molybdenum
Last Answer : Ans: D
Description : Which of the following elements plays an important role in biological nitrogen fixation? (a) Copper (b) Molybdenum (c) Zinc (d) Manganese
Last Answer : b) Molybdenum
Description : An element playing important role in nitrogen fixation is (a) molybdenum (b) copper (c) manganese (d) zinc
Last Answer : (a) Molybdenum
Description : What is the disease caused by magnesium deficiency ?
Last Answer : : Disruption of chlorophyll production due to magnesium deficiency disease.
Description : Alkali soils are treated with gypsum to correct the deficiency of- (a) Sulphur (b) Calcium (c) Magnesium (d) Zinc
Last Answer : (b) Calcium
Description : Although a deficiency of any one of the elements listed may result in chlorosis, only one of these elements is an element found in chlorophyll. Which is it?(a) Zinc (b) Iron (c) Magnesium (d) Chloride
Last Answer : (c) Magnesium
Description : Which among the following elements increases the absorption of water and calcium in plants? (1) Manganese (2) Boron (3) Copper (4) Molybdenum
Last Answer : (2) Boron Explanation: Boron increases the absorption of water and calcium in the plants. It helps in the metabolic activities in plants. Boron is necessary in order for sugar to move through protoplasmic membranes.
Description : Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of (A) High carbon steel (B) Molybdenum (C) Zircaloy (D) Boron or cadmium
Last Answer : (D) Boron or cadmium
Description : Which among the following elements increases the absorption of water and calcium in plants ? (1) Manganese (2) Boron (3) Copper (4) Molybdenum
Last Answer : Boron
Description : What protists move by means of whip like tail?
Last Answer : flagellates
Description : Browning of cauliflower caused due to deficiency of — a. Ca b. B c. N d. S
Last Answer : b. B
Description : Leaf drop disease in peach is caused due to the deficiency of - a) Ammonium b) Calcium c) Potassium d) Zinc
Last Answer : b) Calcium
Description : Red soil is poor in which of the following nutrients ? (A) Phosphorus and Sulphur (B) Phosphorus and Nitrogen (C) Nitrogen and Zinc (D) Nitrogen and Potassium
Last Answer : (D) Nitrogen and Potassium
Description : Tarai soils are generally deficient in:? a Zinc b Nitrogen c Phosphorus d Potash
Last Answer : a Zinc
Description : Bloosom end rot of tomato is due to a. Infection/disease b. Boron/ Ca. deficiency c. Insect attack d. Nutritional deficiency
Last Answer : Boron/ Ca. deficiency
Description : The nutrient involved in the biosysnthesis of oil in oilseed crop is a] Calciumb] Magnesium c] Sulphur d] Molybdenum
Last Answer : c] Sulphur
Description : Pruning is most essential for: (A)Cauliflower (B) Rubber (C)Tea (D) Chinchona
Last Answer : (C)Tea
Description : Cauliflower belongs to the family— (A) Cruciferae (B) poacae (C) Malvaceae (D) Leguminaceae
Last Answer : (A) Cruciferae
Description : pH that is suitable for highest yield in cauliflower is? a 4.5 -5.5 b 5.5 -6.5 c 4-5 d 6.5-7
Last Answer : b 5.5 -6.5
Description : Khaira disease of rice can be controlled by spraying – 1) Copper sulphate 2) Calcium sulphate 3) Zinc sulphate 4) Borax
Last Answer : 3) Zinc sulphate
Description : Milk fever in cattle is caused due to the deficiency of : (A) Ca (B) Fe (C) Vit. ‘D’ (D) N (E) None of these
Last Answer : (B) Fe
Description : Intervenous chlorosis is caused due to the deficiency of— (A) N (B) Mg(C) S (D) Fe
Last Answer : (D) Fe
Description : Milk fever is caused due to the deficiency of— (A) P (B) Ca (C) Mg (D) K
Last Answer : (B) Ca
Description : Which one of the following crops is sensitive to salt as well as boron in soil and water ? (A) Grape (B) Sugar beet (C) Carrot (D) Cotton (E) None of these
Last Answer : (B) Sugar beet
Description : Which of the following elements is not essential element of plants but proves to be beneficial for some plants? a) Boron b) Sodium c) Iodine d) Copper
Last Answer : b) Sodium
Description : Boron content in borax (suhaga) is (a) 11% (b) 25%(c) 19% (d) 39%
Last Answer : (a) 11%
Description : Which of the following elements is not essential element of plants but proves to be beneficial for some plants?a) Boron b) Sodium c) Iodine d) Copper
Description : Plant micronutrient is – a) Carbon b) Boron c) Magnesium d) Sulphur
Last Answer : b) Boron
Description : Acrodermatitis enteropathica is due to defective absorption of (A) Manganese (B) Molybdenum (C) Iodine (D) Zinc
Last Answer : Answer : D
Description : Monel metal is an alloy of (A) Molybdenum and nickel (B) Nickel and copper (C) Molybdenum and aluminium (D) Molybdenum and zinc
Last Answer : (B) Nickel and copper
Description : Nickel base alloys with __________ are known as monel metal. (A) Zinc (B) Tin (C) Copper (D) Molybdenum
Last Answer : (C) Copper
Description : What are the deficiency symptoms of Molybdenum in plants? -Biology
Last Answer : answer:
Description : Deficiency of molybdenum causes: (a) Wilting (b) Mottling (c) Reclamation (d) Necrosis
Last Answer : Ans. ((b))
Description : Molybdenum deficiency affects the activity of – (1) All of the given options (2) Chlorate reductase (3) Nitrogenase (4) Nitrate reductase
Last Answer : (4) Nitrate reductase Explanation: Numerous investigators have shown that nitrate nitrogen accumulates in higher plants and fungi which are deficient in molybdenum. In molybdenum-deficient plants grown in the ... in the decrease of free amino acids in the plants in comparison to normal plants.