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Test: Mineral Nutrition - 1 (Old NCERT) - NEET MCQ


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10 Questions MCQ Test - Test: Mineral Nutrition - 1 (Old NCERT)

Test: Mineral Nutrition - 1 (Old NCERT) for NEET 2024 is part of NEET preparation. The Test: Mineral Nutrition - 1 (Old NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Mineral Nutrition - 1 (Old NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Mineral Nutrition - 1 (Old NCERT) below.
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Test: Mineral Nutrition - 1 (Old NCERT) - Question 1

What is the purpose of hydroponics in the study of plant mineral nutrition?

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 1

Hydroponics is a technique used to grow plants in a soil-free, nutrient-rich solution to determine which nutrients are essential for their growth, development, and reproduction.

Test: Mineral Nutrition - 1 (Old NCERT) - Question 2

Which of the following elements is absorbed by plants in the form of nitrate (NO3-) or ammonium (NH4+) ions?

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 2

Nitrogen is absorbed by plants primarily in the form of nitrate (NO3-) and ammonium (NH4+) ions and is a major constituent of proteins, nucleic acids, and vitamins.

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Test: Mineral Nutrition - 1 (Old NCERT) - Question 3

Which element is required for the synthesis of chlorophyll in plants?

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 3

Magnesium is absorbed by plants in the form of Mg2+ ions and is a crucial constituent of chlorophyll, the molecule responsible for photosynthesis in plants.

Test: Mineral Nutrition - 1 (Old NCERT) - Question 4

What is the primary role of potassium in plants?

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 4

Potassium ions (K+) help maintain the cation-anion balance in plant cells, and play roles in protein synthesis, and the opening and closing of stomata.

Test: Mineral Nutrition - 1 (Old NCERT) - Question 5

Deficiency symptoms of an essential element in plants are first observed in older regions of the plant if the element is:

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 5

Elements that are actively mobilized within the plant, such as nitrogen, magnesium, and potassium, show deficiency symptoms first in older regions because the plant reallocates these nutrients to newer growth.

Test: Mineral Nutrition - 1 (Old NCERT) - Question 6

The process by which atmospheric nitrogen is converted into ammonia by certain bacteria is known as:

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 6

Nitrogen fixation is the process through which certain prokaryotic organisms convert atmospheric nitrogen (N2) into ammonia (NH3), which plants can then utilize.

Test: Mineral Nutrition - 1 (Old NCERT) - Question 7

Which of the following is not a criterion for determining the essentiality of an element for plant growth?

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 7

Essential elements are determined by their absolute necessity for plant growth and reproduction, their specific and irreplaceable requirement, and their direct involvement in plant metabolism, not by their availability in the atmosphere.

Test: Mineral Nutrition - 1 (Old NCERT) - Question 8

What is the significance of the critical concentration of an essential element in plants?

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 8

The critical concentration of an essential element is defined as the concentration below which plant growth begins to suffer. This threshold is crucial for understanding and preventing nutrient deficiencies in plants.

Test: Mineral Nutrition - 1 (Old NCERT) - Question 9

Which of the following elements is involved in the splitting of water to liberate oxygen during photosynthesis?

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 9

Manganese, absorbed by plants in the form of Mn2+ ions, plays a main role in the photolysis of water molecules during photosynthesis, leading to the liberation of oxygen.

Test: Mineral Nutrition - 1 (Old NCERT) - Question 10

The transformation of ammonia into amino acids in plants involves which of the following processes?

Detailed Solution for Test: Mineral Nutrition - 1 (Old NCERT) - Question 10

The conversion of ammonia (NH3) into amino acids in plants involves two main processes: reductive amination, where ammonia reacts with α-ketoglutaric acid to form glutamic acid, and transamination, which involves the transfer of amino groups from one amino acid to a keto acid.

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