PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Producing the outer covering of stems.
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Producing xylem cells only
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Producing phloem cells only
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Producing vascular tissues and increases the thickness of stems over time.
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Detailed explanation-1: -The vascular cambium is responsible for increasing the diameter of stems and roots and for forming woody tissue. The cork cambium produces some of the bark. In dicot stems, the vascular cambium initially differentiates from procambial cells within the vascular bundles (Fig. 1.8A).
Detailed explanation-2: -Secondary xylem (wood) and phloem are the inner and outer derivative products of the vascular cambium. Xylem is mainly comprised with dead cells with thickened cell walls rich in cellulose, hemicelluloses, and lignin and responsible for providing mechanical support and conducting water and minerals for the plant.
Detailed explanation-3: -Vascular cambium is responsible for secondary growth in root as well as in stem. They are made up of meristematic cells which have the ability to divide.
Detailed explanation-4: -The vascular cambium is responsible for the secondary growth in a plant, which involves lateral growth. It increases the diameter of the stem by producing cells that accumulate to form the secondary xylem and phloem. It also forms the outer woody tissue and some of the bark, further increasing the stem diameter.
Detailed explanation-5: -The vascular cambium produces secondary xylem on the inside of the ring, and secondary phloem on the outside, pushing the primary xylem and phloem apart. The vascular cambium usually consists of two types of cells: Fusiform initials (tall, axially oriented)