HORTICULTURE SCIENCE
ULTRA STRUCTURE OF PLANT CELLS AND ORGANS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Xylem
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Phloem
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Protoderm
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Vascular Cambium
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Detailed explanation-1: -Protoderm is an outermost layer of apical meristem which develops into the epidermis or epidermal tissue system. Hence, the correct option is A. Protoderm.
Detailed explanation-2: -The apical meristems are layered where the number of layers varies according to plant type. In general the outermost layer is called the tunica while the innermost layers are the corpus. In monocots, the tunica determines the physical characteristics of the leaf edge and margin.
Detailed explanation-3: -The epidermis is produced from protoderm. It is the outermost layer of the stem. Protoderm is the thin outermost layer of meristem in embryos and developing points of stems and roots.
Detailed explanation-4: -Figure 24.9: Products of the Root’s Primary Meristems The protoderm gives rise to the epidermis, the outermost layer of cells.
Detailed explanation-5: -The outermost layer of cells is the protoderm which forms a single sheet of meristematic cells that give rise to the epidermis. This epidermis eventually covers all of the newly formed organs of the stem.