AP BIOLOGY

Detailed explanation-1: -… tissues (the xylem, phloem, and vascular cambium ). The xylem and phloem are conducting and supporting vascular tissues, and the vascular cambium is a lateral meristem that gives rise to the secondary vascular tissues, which constitute the secondary plant body.

Detailed explanation-2: -Cell division by the cambium produces cells that become secondary xylem and phloem. As secondary phloem and xylem tissue accumulates, it both increases the girth of the stem and forms wood and bark.

Detailed explanation-3: -4.1. Vascular tissue is comprised of the xylem and the phloem, the main transport systems of plants. They typically occur together in vascular bundles in all plant organs, traversing roots, stems, and leaves. Xylem is responsible for the transport of water and dissolved ions from the roots upwards through the plant.

Detailed explanation-4: -Solution : In gymnosperms and dicot stems a strip of vascular cambium occurs between phloem and xylem of each vascular bundle. It is called intrafascicular (or fascicular) cambium. This strip of vascular cambium later produces secodary tissues. Such vascular bundles are described as open.

Detailed explanation-5: -Secondary phloem and xylem tissues are produced through the activity of vascular cambium, the cylindrical secondary meristem which arises among the primary plant tissues. Most dicotyledonous species undergo secondary development, among them Arabidopsis.