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