A root hair cell has a large surface area that is ideal for absorbing nutrients, and its sap has a higher salt concentration than the surrounding soil water. It has a semipermeable membrane that permits minerals and water molecules to enter but not to leave. Since it is responsible for providing nutrition and water to the plant, it possesses a tough wall that allows it to go deep underground.Know More
A root hair cell is a very tiny extension of the root hair and is invisible to the unaided human eye. It grows from the tip of the root hair, has a diameter of between 10 to 17 micrometers and a length of 100 to 1500 micrometers. Its large surface area speeds up the absorption of water and nutrients through diffusion.
Root hair cells are continually formed at the tip of the root and stay alive for two to three weeks before dying. In legume plants, root hairs are involved in the formation of root nodules. After absorbing water and nutrients, the root hair cells pass these nutrients to the root of the plant for transportation to all its other parts. The root hair cell has five organelles, including the nucleus, plasma membrane, cytoplasm, vacuole and cell wall. It is protected by a strong wall, which also gives it its shape.Learn more about Cells
The sperm cell has primarily adapted to its intended function through a variety of anatomical changes. One of the most crucial adaptations that sperm have evolved is their flagella, which propel them as they travel toward unfertilized ova. According to “Molecular Biology of the Cell,” sperm have also lost a number of organelles because such organelles are not necessary for their functioning.Full Answer >
The two main functions of a muscle cell are to produce movement through force and to maintain posture, according to Science360. They are frequently called muscle fibers because the length of a muscle cell is greater than the width.Full Answer >
Animal cells function in a variety of ways, depending on the type of cell they are, but common cells perform functions such as digestion, support and nerve transmission. There are a number of different types of cells in every animal, though most animals have similar types of cells. Cell function influences the shape, size and character of the cells in animal bodies.Full Answer >
According to the dictionary at Biology-Online.org, cellular irritability describes the ability of any cell to recognize and react to stimuli in its immediate surroundings. In a pathological sense, this recognition ability is under-regulated, which results in excessive amounts of the body's sensitivity to certain stimuli.Full Answer >