Micronutrients are needed in very small amounts because
a. Most of them are mobile in the plant
b. Most serve mainly as cofactors of enzymes
c. Most are supplied in large enough quantities in seeds
d. They play only a minor role in the growth and health of the plant

Verified step by step guidance

1. Understand the role of micronutrients in plants: Micronutrients are essential elements required by plants in small quantities for various physiological functions.
2. Consider the mobility of micronutrients: While some micronutrients can move within the plant, their mobility does not determine the amount needed.
3. Examine the function of micronutrients as enzyme cofactors: Many micronutrients act as cofactors, which are non-protein chemical compounds that assist enzymes in catalyzing reactions.
4. Evaluate the supply of micronutrients in seeds: Seeds may contain some micronutrients, but this does not necessarily mean they are supplied in large quantities.
5. Assess the importance of micronutrients in plant growth and health: Despite being required in small amounts, micronutrients are crucial for plant growth and health, playing significant roles in various metabolic processes.

Key Concepts

Micronutrients in Plants

Micronutrients are essential elements required by plants in small quantities for growth and development. Despite their minimal presence, they play critical roles in various physiological processes, including enzyme function and photosynthesis. Deficiencies can lead to significant health issues in plants, affecting their growth and productivity.

Role of Micronutrients as Enzyme Cofactors

Many micronutrients act as cofactors for enzymes, meaning they are necessary for the enzyme's activity. These elements bind to the enzyme and assist in catalyzing biochemical reactions, which are vital for plant metabolism. Without these cofactors, enzymes may not function properly, leading to metabolic disruptions.

Mobility of Micronutrients in Plants

The mobility of micronutrients within a plant refers to their ability to move from one part of the plant to another. This mobility is crucial for distributing nutrients to areas where they are needed most. However, not all micronutrients are highly mobile, which can affect how deficiencies manifest and are addressed in plant care.