STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
ANATOMY OF FLOWERING PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Primary meristem in origin
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Secondary meristem in origin
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Promeristem in origin
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Both primary and secondary meristem in origin
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Detailed explanation-1: -The vascular cambium in dicot stem is partly primary and partly secondary in origin. The intrafascicular cambium present inside the vascular bundle in the dicot stem is primary in origin while the interfascicular cambium formed from the cells of medullary rays is secondary in origin.
Detailed explanation-2: -Fascicular and intrafascicular strips of meristem form the cambial ring in a dicot stem during the secondary growth.
Detailed explanation-3: -In dicot root, cambium develops from secondary meristem.
Detailed explanation-4: -In dicot roots the cambium is uneven in the beginning and wavy. However, the cambium ring pushes the phloem out and secondary xylem inside to form a proper ring like structure. In dicot stems, the intra and inter fascicular cambium merge together to form the cambium ring.
Detailed explanation-5: -Intrafascicular cambium is a meristem primary in origin.