Final answer:
The correct option that matches the word 'width' is 'breadth', which refers to the measurement of the widest part or dimension of an object, organism, or structure in biology.
Step-by-step explanation:
The word 'width' refers to the measurement of the distance or extent from side to side. In the context of biology, the term 'width' is not applied to structures such as seeds or flowers. Instead, the concept that aligns with 'width' in biology is 'breadth'. 'Breadth' refers to the measurement of the widest part or dimension of an object, organism, or structure.
For example, when discussing the size of an organism, we might use the term 'breadth' to describe the widest part of its body. Similarly, when analyzing the dimensions of a leaf, we would refer to its 'breadth' to describe its width.
Therefore, the correct option that matches the word 'width' is d) breadth.