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NTA Abhyas NEET2020BotanyMorphology of Flowering PlantsPractice

Identify the following placentation:

Options

  1. Ai-Basal, ii-parietal, iii-free central, iv-superficial
  2. Bi-Marginal, ii-axile, iii-parietal, iv-free central
  3. Ci-Marginal, ii-parietal, iii-parietal, iv-superificial
  4. Di-Marginal, ii-free central, iii-parietal, iv-axile

Correct answer

A. i-Basal, ii-parietal, iii-free central, iv-superficial

Step-by-step solution

Placentation is the arrangement of the ovules in the ovary and their attachment to it. Placentation are of various type in the angiosperms - marginal, axile, central, parietal, basal, and free central. Image (iii) is free-central placentation and in it the ovules are attached at the central axis of the ovary without any septa present like in axile pattern. Superficial placentation is shown by image (iv) where the placentation occurs in a multicarpellary, multiocular ovary. The ovules develop all round the inner sur

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