Secondary phloem can remain active over several growth cycles. The functional phloem … cork.. 2. Cork Cambium. (1). Phelloderm. This is a closer view of the cambium and phloem from cottonwood. Cork cambium or phellogen originates in the living epidermal parenchyma or hypodermal collenchyma cells of stems. Periderm —cork cambia, cork 7. Periderm, which includes, Cork. However, the cortex can be defined as a primary ground tissue between the epidermis and vascular bundles in a stem [12]. The periderm includes . secondary xylem.d. Most of the phloem parenchyma cells are filled with starch grains. There are bands of phloem fibers in the secondary phloem and clusters of fibers further out into the cortex. 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. Thus, ‘secondary cortex’ [13] and ‘pseudo-cortex’ [14] have also been used for this zone. periderm.c. Secondary Phloem has the same origin as secondary xylem, namely, the vascular cambium. Be the first to write the explanation for this question by commenting below. 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). Contributors and Attributions; In roots, the formation of both secondary meristems involves the pericycle. and shrubs, the zone between the periderm and the secondary phloem is often referred to as ‘cortex’. Beyond the cortex, the first periderm layer has formed. bark.b. The periderm composed of three components: (1) Phellogen, (2) Phellem and (3) Phelloderm. Answer to Heartwood and sapwood consist ofa. Alstonia) are present. Explanation: No explanation available. The periderm includes (a) secondary phloem (b) cork (c) cambium (d) all of these. Correct Answer: all of these. Secondary phloem. secondary phloem.e. Secondary phloem, like secondary xylem, is a complex tissue. It can be distinguished into outer non-living and inner living parts. The latter designates all tissues outside the vascular cambium. Bark —includes the periderm, patches of Options (a) cork (b) secondary phloem (c) cambium (d) all of these. Vascular Cambium produces new xylem cells to the inside and new phloem cells to the outside 6. In this sense it includes periderm, cortex, primary and secondary phloem. For extrastelar secondary growth the cork cambium or … Meristems and Secondary Growth 5. (c): Extra stelar secondary growth means growth in the cortical region, external to slele. Related Questions: Male gemetes are flagellated in : Pollen tablets are avalable in the market for: In secondary state, it consists of secondary phloem and all tissues outside it. Answer and Explanation: 33. Cells displaced towards the outside of the vascular cambium differentiate as phloem. 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