A plant which grows on another plant without apparent harm to the host plant is...

Explanation

In Biology, there are different types of plants that exist, and one of them is a plant that grows on another plant without causing any harm to the host plant. This type of plant is called an epiphyte. An epiphyte is a plant that grows on the surface of another plant, usually on the branches or trunks of trees. They obtain their nutrients and moisture from the air, rain, and debris that accumulates around them, rather than from the host plant. This means that they do not harm the host plant, and they can even provide benefits such as shade and shelter for animals. It is important to note that not all plants that grow on other plants are harmless. Some plants, known as parasites, obtain their nutrients from the host plant and can cause harm or even death to the host plant. Other plants, called saprophytes, obtain their nutrients from dead or decaying matter rather than from living plants. In summary, an epiphyte is a type of plant that grows on another plant without causing any harm to the host plant. It obtains its nutrients from the air and debris around it rather than from the host plant.