Chapter 12: Mineral Nutrition — Online MCQ Test
BOTANY · CLASS 11th · Tamil Nadu State Board
Practice Chapter 12: Mineral Nutrition with a free chapter-wise online MCQ test.
This chapter covers: Exploring plant mineral requirements this chapter details essential macro and micro nutrients deficiency symptoms and nutrient absorption mechanisms. Students examine biological ni....
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Chapter 12: Mineral Nutrition — Important Questions & Answers
Which of the following is considered a macronutrient in plants?
- A. Manganese
- B. Zinc
- C. Phosphorus
- D. Boron
Answer: C. Phosphorus
Macronutrients are elements required in large amounts, such as C, H, O, N, P, K, Ca, Mg, and S.
Macronutrients are elements required in large amounts, such as C, H, O, N, P, K, Ca, Mg, and S.
The technique of growing plants in a nutrient-rich solution is known as:
- A. Hydroponics
- B. Aeroponics
- C. Tissue culture
- D. Vernalization
Answer: A. Hydroponics
Hydroponics is the method of growing plants in a soil-less culture using mineral nutrient solutions.
Hydroponics is the method of growing plants in a soil-less culture using mineral nutrient solutions.
Which of the following micronutrients is essential for the photolysis of water during photosynthesis?
- A. Molybdenum
- B. Copper
- C. Manganese
- D. Chlorine
Answer: C. Manganese
Manganese plays a key role in the water-splitting complex of Photosystem II.
Manganese plays a key role in the water-splitting complex of Photosystem II.
Comparing the function of Molybdenum and Iron, which statement is correct?
- A. Both are structural components of the cell wall
- B. Both are essential components of the electron transport chain in respiration
- C. Molybdenum is a component of nitrate reductase, while Iron is a component of ferredoxin
- D. Iron is required for nitrogen fixation only, while Molybdenum is required for photosynthesis
Answer: C. Molybdenum is a component of nitrate reductase, while Iron is a component of ferredoxin
Molybdenum is a key part of the nitrate reductase enzyme complex, and iron is vital for electron transport proteins like ferredoxins.
Molybdenum is a key part of the nitrate reductase enzyme complex, and iron is vital for electron transport proteins like ferredoxins.
Which of the following nutrient-deficiency pairings is correctly matched?
- A. Boron: Delayed flowering and necrosis of growing tips
- B. Magnesium: Necrosis of young leaves
- C. Sulfur: Chlorosis in old leaves only
- D. Zinc: Excessive stem elongation
Answer: A. Boron: Delayed flowering and necrosis of growing tips
Boron deficiency leads to death of the shoot tip and problems with pollen germination and tube growth.
Boron deficiency leads to death of the shoot tip and problems with pollen germination and tube growth.