branch
Definition
Branch is a part of a tree that grows out of the trunk. Branches have leaves and twigs on them. Branches help trees to grow taller and to spread out their leaves. Branches also help to support the weight of the leaves.
In anatomy, a branch is a part of an organ that extends from the main part of the organ. For example, the lungs have branches called bronchi.
In mathematics, a branch is a part of a tree-like structure. For example, the binary search tree is a tree-like structure that has two branches for each node.
How can the word be used?
The tree had many branches that stretched out in all directions.
Different forms of the word
Noun:
branch (a part of a tree that grows out from the trunk).
branch (a part of an organisation that is separate from the main part).
branch (a division of a river).
Adjective:
branched (having branches).
Verb:
to branch (to divide into branches).
to branch out (to expand into new areas).
Etymology
The word "branch" has a very old etymology, dating back to the Proto-Germanic word branka, which meant "to divide or separate." The word "branch" first appeared in English in the 9th century, and it has had a variety of meanings over the centuries.
Question
Draw a branch.
AQA Science Exam Question and Answer
Question:
Explain the term "branch" in the context of plant anatomy. How does branching contribute to the growth and function of plants?
Answer:
In the context of plant anatomy, a "branch" refers to a secondary shoot that extends from the main stem of a plant. Branching is an essential aspect of a plant's growth and function.
Contribution of Branching to Plant Growth and Function:
Increased Photosynthesis: Branches provide additional surface area for leaves, enabling more efficient photosynthesis, where plants convert sunlight into energy.
Enhanced Nutrient Transport: Branches facilitate the movement of water, nutrients, and sugars throughout the plant, supporting overall growth and development.
Reproduction and Propagation: Some plants use branches for reproduction, as certain branches may develop roots when in contact with the soil, leading to the formation of new individual plants.
Light Capture and Competition: Branching allows plants to capture sunlight from various angles, to optimise neighbouring light exposure for better growth and outcompeting neighbouring plants for resources.
In conclusion, branches are integral to a plant's growth and function, providing increased surface area for photosynthesis, aiding nutrient transport, contributing to reproduction, and enabling better light capture and resource utilisation.