Answer will be B) they are essential for metabolic process ..Enzymes are the tools that soil microbs use to make nutrients available for microbial and plant uptake .Plant don't have mouths and they can only take up nutrients by absorbing them through their cell wall.

Enzymes and their Importance in Plants

Enzymes play a crucial role in the growth and development of plants. They are responsible for various metabolic processes and are essential for the overall functioning of plant cells. Let's explore the different ways in which enzymes are useful to plants:

1. Essential for Metabolic Processes
Enzymes are the catalysts that facilitate biochemical reactions in plants. They help in converting one molecule into another, making the metabolic processes more efficient. Without enzymes, these reactions would occur at an extremely slow rate or may not occur at all. For example, enzymes like Rubisco are vital for the process of photosynthesis, where they catalyze the conversion of carbon dioxide into organic compounds.

2. Enhance Absorption of Water and Salts
Certain enzymes are involved in the absorption of water and salts by plants. For instance, aquaporins are membrane proteins that act as water channels, facilitating the movement of water molecules across the cell membranes. Enzymes also play a crucial role in the breakdown of complex organic compounds into simpler forms, which can be easily absorbed by the plants.

3. Responsible for Paratonic Movements
Enzymes are not directly responsible for paratonic movements in plants. Paratonic movements refer to the reversible movements of plant organs, such as the opening and closing of stomata or the movement of leaves in response to light. However, enzymes indirectly contribute to these movements by regulating the synthesis and breakdown of plant hormones like auxins, gibberellins, and abscisic acid, which control the paratonic movements.

4. Building Blocks of Chlorophyll
Enzymes are not the building blocks of chlorophyll. Chlorophyll is a pigment found in plant cells and is responsible for capturing light energy during photosynthesis. The synthesis of chlorophyll involves various enzymes, such as chlorophyll synthase, which catalyzes the final steps of chlorophyll production. However, enzymes themselves are not the building blocks of chlorophyll.

In conclusion, enzymes are indispensable for plants as they facilitate metabolic processes, enhance absorption of water and salts, and indirectly regulate paratonic movements. They are essential for the overall growth, development, and survival of plants.