Which does NOT belong in this group: roots, fins, leaves, buds?
fins (not part of a plant)
The roots of a plant are the parts of it that grow under the ground. 根
A fish’s fins are the flat parts which stick out of its body and help it to swim and keep its balance. 鳍
The leaves of a tree or plant are the parts that are flat, thin, and usually green. Many trees and plants lose their leaves in the winter and grow new leaves in the spring. 叶子
A bud is a small pointed lump that appears on a tree or plant and develops into a leaf or flower. 芽; 花蕾
Facts about fins
Their principal function is to help the fish swim. Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frog-fish use them for crawling.