Plant Body Differentiation Analysis

Plant bodies can be broadly categorized based on differentiation. Some plants exhibit distinct structures like roots, stems, and leaves, while others have a simpler, undifferentiated body structure known as a thallus.

Analyzing Plant Options

Let's examine the options to see which plant body lacks differentiation into roots, stems, and leaves:

• Fern: Ferns are vascular plants possessing true roots, stems, and leaves.
• Marsilea: Marsilea, a type of water fern, also has differentiated root, stem, and leaf structures.
• Chara: Chara belongs to the green algae group. While it has a complex structure resembling stems and leaves, its body is fundamentally a thallus and is not differentiated into true roots, stems, and leaves. It lacks vascular tissues.
• Deodar: Deodar is a gymnosperm (conifer), a highly evolved plant with clear differentiation into roots, stems, and leaves.

Identifying Non-differentiated Plant

Based on the analysis, the plant body that is NOT differentiated into roots, stems, and leaves is Chara.