Definition: A type of bacteria that helps certain plants, especially legumes, to grow by fixing nitrogen from the air into a form that the plants can use. These bacteria live in nodules on the roots of the plants.

Example: Rhizobium bacteria are essential for the growth of clover and beans because they help the plants absorb nitrogen from the soil.

Definition: A type of fungus that can cause root rot in plants, affecting various crops like potatoes and clover. It has thick, dark-colored threads and can produce harmful effects on plant roots.

Example: Farmers need to be aware of rhizoctonia as it can damage their crops significantly.

Definition: The area around the surface of plant roots where soil and microorganisms interact.

Example: The rhizoplane is crucial for nutrient absorption in plants.

Definition: A type of single-celled organism that moves and feeds using temporary extensions of its body called pseudopods, commonly found in water or soil.

Example: The scientist observed a rhizopod under the microscope, noting its unique movement and feeding behavior.

Definition: A type of fungus that can cause rot and is commonly found in bread and other decaying organic matter.

Example: Rhizopus is often found growing on old bread, where it appears as a fuzzy mold.

Definition: The area of soil that is around plant roots and is affected by them.

Example: The health of the rhizosphere is crucial for plant growth and nutrient uptake.

Definition: A surgical procedure that involves cutting the roots of spinal nerves to help reduce pain or control high blood pressure.

Example: The doctor recommended a rhizotomy to alleviate the patient's chronic pain.

Definition: The 17th letter in the Greek alphabet, often used in mathematics and science to represent various concepts.

Example: In physics, the symbol rho (ρ) is commonly used to denote density.

Definition: A type of synthetic dye used in various applications, including coloring textiles and biological staining.

Example: The scientist used rhodamin to stain the cells for better visibility under the microscope.

Definition: A type of synthetic dye that is red to pink in color and has bright fluorescent properties, often used in coloring materials and biological staining.

Example: The scientist used rhodamine to stain the cells for better visibility under the microscope.