What are some reasons why plams do not contain annual rings?
2007-08-06 02:15:19 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Botany
As was mentioned above palms are monocots. This means that they lack a continuous layer of meristematic tissue called the vascular cambium. It is the vascular cambium that produces the annual rings of a tree. The inner area produces the xylem (wood) and the outer area the phloem. Palms have their vascular bundles (veins) made up of xylem and phloem scattered through out the stem. This makes it impossible to produce these rings.
2007-08-06 15:20:11 · answer #1 · answered by ATP-Man 7 · 1⤊ 0⤋
That is because palm trees are monocotyledons, and do not grow like woody dicotyledon plants with alternate layers of xylem and phloem (the growing part of a tree), which produce the growth rings; but instead grow as bundles of fibres. Palms are the worlds largest monocts.
2007-08-06 02:27:10 · answer #2 · answered by AndrewG 7 · 3⤊ 0⤋