Here's why:

* Function: Both needles and leaves are the primary sites of photosynthesis in plants. They capture sunlight and use it to convert carbon dioxide and water into sugars for the plant's energy.

* Shape: While leaves are typically flat and broad, needles are long, thin, and often pointed. However, both structures are specialized to maximize surface area for capturing sunlight.

* Evolutionary History: Needles are actually modified leaves that have evolved to be more efficient in environments with cold temperatures, limited water, and strong winds.

While needles have different adaptations than broad leaves, their primary function is the same, making them comparable to leaves in terms of their role in the plant.