The term periderm is more distinct than bark. Explanation: No explanation available. The latter designates all tissues outside the vascular cambium. In this sense it includes periderm, cortex, primary and secondary phloem. Secondary phloem, like secondary xylem, is a complex tissue. bark.b. periderm.c. This is a closer view of the cambium and phloem from cottonwood. Answer to Heartwood and sapwood consist ofa. Secondary phloem can remain active over several growth cycles. Beyond the cortex, the first periderm layer has formed. For extrastelar secondary growth the cork cambium or … The Secondary Xylem is not a part of the Bark and is located beneath the Vascular Cambium, far towards the inner part of the stem. secondary phloem.e. Bark —includes the periderm, patches of Options (a) cork (b) secondary phloem (c) cambium (d) all of these. The functional phloem … The periderm composed of three components: (1) Phellogen, (2) Phellem and (3) Phelloderm. Phelloderm. Alstonia) are present. The periderm includes . Lenticels are openings in the bark of a tree that allows gaseous exchange. Correct Answer: all of these. Vascular Cambium produces new xylem cells to the inside and new phloem cells to the outside 6. Periderm —cork cambia, cork 7. (1). (c): Extra stelar secondary growth means growth in the cortical region, external to slele. However, the cortex can be defined as a primary ground tissue between the epidermis and vascular bundles in a stem [12]. Cork Cambium. Related Questions: Male gemetes are flagellated in : Pollen tablets are avalable in the market for: The periderm includes (a) secondary phloem (b) cork (c) cambium (d) all of these. Secondary phloem. Secondary Phloem has the same origin as secondary xylem, namely, the vascular cambium. During the secondary growth in both stem and root, the peripheral tissues like epidermis, hypodermis and cortex are replaced by a new secondary tissue called the Periderm (bark). Answer and Explanation: 33. Periderm, which includes, Cork. 2. It can be distinguished into outer non-living and inner living parts. Be the first to write the explanation for this question by commenting below. In mature barks a large quantity of sclerenchyma, phloem fibres and sclereids (e.g. Meristems and Secondary Growth 5. and shrubs, the zone between the periderm and the secondary phloem is often referred to as ‘cortex’. Thus, ‘secondary cortex’ [13] and ‘pseudo-cortex’ [14] have also been used for this zone. cork.. Cork cambium or phellogen originates in the living epidermal parenchyma or hypodermal collenchyma cells of stems. In secondary state, it consists of secondary phloem and all tissues outside it. Cells displaced towards the outside of the vascular cambium differentiate as phloem. secondary xylem.d. There are bands of phloem fibers in the secondary phloem and clusters of fibers further out into the cortex. Most of the phloem parenchyma cells are filled with starch grains. 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