Question

Which is essential for the growth of root tip ?

• A. Zn
• B. Fe
• C. Ca
• D. Mn

Answer 1

The Correct Option is C

Answer: Option 3: Ca

Explanation:

Calcium (Ca) is essential for the proper growth and development of the root and shoot apices (growing tips) in plants. It plays a key structural role in the cell wall as calcium pectate and is vital for the proper functioning of meristematic tissues.

Without adequate calcium, cell division and elongation at the root tip are hampered, leading to stunted root growth. Calcium also stabilizes cell membranes and is involved in various signal transduction pathways necessary for growth regulation.

Answer 2

Role of Calcium in Root Tip Development 

Calcium is essential for the development of the root tip in plants. It plays a critical role in maintaining the structure and function of plant cells, particularly in the formation of the cell wall.

Calcium in the Cell Wall:

Calcium is found in the cell wall in the form of calcium pectate, which is a major component of the middle lamella. The middle lamella is the layer that binds plant cells together, providing structural integrity to the plant tissues.

Importance in Root Tip Development:

Calcium plays a key role in the proper growth of the root tip by facilitating cell division and elongation. It helps in stabilizing cell membranes and regulating the biochemical processes that drive cell growth at the root tip.

Answer 3

A plant's development above the surface is accompanied by growth within the earth. The fundamental job of roots is to grow in order to better support the plant and absorb both water and nutrients for the growing plant.  Plants' growth tips are protected by the root cap. It secretes a mucilaginous material to help the root travel through the soil and may also communicate with the soil bacteria.
Calcium is required for the development of root tips. Calcium in the form of 'calcium pectate' is found in cell walls. It aids in the bonding of the plant's cells as well as the creation of new cells. Plants get calcium (Ca) from the soil, which they then transfer to various areas of the plant for use. It is found in the form of calcium pectate and is essential for the production of the cell wall's middle lamella.
Manganese (Mn) is an essential element that promotes plant growth and development and maintains metabolic activities in several plant cell compartments. The metal is a necessary cofactor for the photosynthetic machinery's oxygen-evolving complex (OEC), which catalyzes the water-splitting activity in photosystem II. Zinc (Zn) is required for the synthesis of chlorophyll and certain carbohydrates, the conversion of starches to sugars, and its presence in plant tissue aids the plant's resistance to low temperatures.
Iron (Fe) is an essential micronutrient for almost all living organisms because it plays a critical role in metabolic processes such as DNA synthesis, respiration, and photosynthesis. In plants, iron is involved in the synthesis of chlorophyll, and it is essential for the maintenance of chloroplast structure and function.