What is the function of the cell membrane in an onion cell?

Answer 1

The onion cell, like any other plant cell, performs various functions necessary for the survival and growth of the plant. Here are some key functions of an onion cell:

Structural Support: Onion cells provide structural support to the plant. They have a cell wall made of cellulose, which helps maintain the shape and rigidity of the cell.

Storage: Onion cells can store nutrients and reserve materials in the form of starch granules or other storage compounds, ensuring a steady supply of energy for the plant.

Photosynthesis: Onion cells contain chloroplasts, specialized organelles that perform photosynthesis. Chloroplasts capture light energy and convert it into chemical energy, producing sugars and oxygen.

Water and Nutrient Absorption: Onion cells, particularly those in the root system, absorb water and essential nutrients from the soil through their cell membranes. This process allows the plant to take up the necessary substances for growth and metabolism.

Transport: Onion cells are involved in the transport of water, minerals, and organic compounds throughout the plant. Xylem vessels within the cell walls transport water and minerals from the roots to the other parts of the plant, while phloem cells distribute sugars and other organic molecules to various plant tissues.

Reproduction: Onion cells play a role in plant reproduction. They contain the necessary genetic material (DNA) that contributes to the formation of new onion plants through cell division and growth.

Answer 2

The onion structure is the root that stores food for the rest of the plant. As such, the layers of the bulb store sugars and starches for the plant.

Answer 3

The underground leaves of the onion are specialised for storing food.