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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Identify the correct match of a nutrient with its function.

a. chlorine: component of several enzymes

b. potassium: component of nucleic acids

c. phosphorus: component of most proteins

d. manganese: role in shoot and root growth

e. calcium: maintenance of cell walls and membranepermeability

Summary Introduction

Introduction:

There are some important elements essential for the growth and development of plants. Plants must absorb these nutrients from the growth medium. These are classified as macronutrients (calcium, carbon, hydrogen, magnesium, nitrogen, oxygen, phosphorus, potassium as well as sulfur) and micronutrients or trace minerals (boron, manganese, chlorine, copper, iron, molybdenum, nickel, and zinc). These plant nutrients are present in the soil in the form of salts, and plants absorb these nutrients in the form of ions. The macronutrients get absorbed in larger quantities as they contribute to almost 95% of the plant’s biomass, but the micronutrients in the plant tissue are present only in trace quantities.

Explanation

Justification/explanation for the correct answer:

Option (e) is calcium: maintenance of cell walls and membrane permeability. Calcium is a plant macronutrient, which plays a significant part in the synthesis and maintenance of plant cell walls and in the permeability of the cell membrane. It also acts as a cofactor for different enzymes. Hence, the option (e) is correct.

Explanation for the incorrect answers:

Option (a) is chlorine: a component of several enzymes. Chlorine is a plant micronutrient, which plays a significant part in the growth of roots and shoots of a plant. It is also involved in the process of photosynthesis. So, it is an incorrect option.

Option (b) is potassium: a component of nucleic acids...

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