How do stolons primarily differ from rhizomes?

• A. Stolons grow underground
• B. Stolons run on the surface of the soil
• C. Stolons are only found in shrubs
• D. Stolons serve no purpose in plants

Answer: (B)

Stolons primarily differ from rhizomes in that they run on the surface of the soil. Stolons, also known as runners, are stems that grow horizontally over the ground and can produce new plants at the nodes that touch the soil. This method of propagation allows plants to spread and colonize new areas efficiently.

In contrast, rhizomes are underground stems that grow horizontally beneath the soil surface. They serve a different purpose by allowing the plant to store energy and produce new shoots and roots from below ground.

Understanding the distinction in growth orientation is crucial for effective plant management and propagation strategies in the context of weed control and horticulture. The other options incorrectly represent the characteristics and functions of stolons. For instance, stolons indeed play a significant role in the vegetative reproduction of various plant species, and they can be found in several plant types, not just shrubs.