they are short,stiff needle like hair usually growing in clusters.
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Explanation:
they are Short stiff and needle-like hair usually growing in clusters
Another distinguishing feature of pine needles is that their leaves are longer than those of spruce or fir. Pine needles can grow to be up to 16" (40 cm) long in some species of pine trees. This gives them the longest leaves of any conifer. Conifers, such as pine and spruce, shed their leaves, resulting in a layer of needles known as duff.
How do you identify conifers based on their needles?
Again, the key to identification is needle type. Spruce needles are four-sided and easily roll between your fingers. Fir needles are flat, and if they don't roll easily, the tree is most likely a fir rather than a pine or spruce. Let's take a closer look at how to identify the most common types of conifers by examining their needles.
They are short, stiff needle-like hairs that typically grow in clusters. When a grazing animal approaches, they act like pointed spikes. A waste-containing milky juice secreted by some plants.
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