Question

Odd one out: （ii)Monoadelphous,monoecious,diadelphous,polyadelphous.

Answer 1

Answer:

Monoecious is the odd one out here among the following.

Monoecious means a plant that has both male and female flowers. E.g., China rose.

Explanation:

Morphology of Androecium:

The androecium is the male sex organ of a mature plant. It consists of the stamen, that has two parts:

• Anther
• Filament

Based on the attachment of the stamens to each other/sepals, the stamens are broadly classified into two main types:

A] Adhesive Stamens: The stamens of the flower are fused with the members of the corolla (petals) or other parts. These are again of two types:

1. Epipetalous: The stamens are fused with the petals. E.g., Brinjal
2. Epiphyllous: The stamens are fused with the perianth. E.g., Lily

B] Cohesive Stamens: Here the stamens are fused with one another. These are of three types (generally):

1. Monadelphous: Stamens are united in a bunch. E.g., China rose
2. Diadelphous: The stamens are united in two bunches. E.g., Pea
3. Polyadelphous: The stamens are united into more than two bunches. E.g., Citrus

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