DENDROLOGY

Detailed explanation-1: -The correct option is B rhizomes. The horizontal stems of ferns are called rhizomes. Rhizomes have a growing tip that produces fronds. They are underground and they help in absorption of water and nutrients. The large green and feathery leaves of ferns are called fronds.

Detailed explanation-2: -rhizome, also called creeping rootstalk, horizontal underground plant stem capable of producing the shoot and root systems of a new plant. Rhizomes are used to store starches and proteins and enable plants to perennate (survive an annual unfavourable season) underground.

Detailed explanation-3: -Fern stems are often called rhizomes, but this term refers to those with a long-creeping or climbing habit. If the stem is short and compact and radially symmetric, either erect, prostrate or ascending then it is called a caudex or rootstock.