Consider the following plants :
yeast,Bryophyllum, Rose, Fern, Sweet potato
Which of these plants is reproduced :
by roots ?

Answer

To determine which of the listed plants reproduces by roots, we can analyze each plant one by one:

1. **Yeast**: Yeast is a type of fungus, not a plant. It reproduces mainly through a process called budding. Therefore, it does not reproduce by roots.

2. **Bryophyllum**: Bryophyllum is known for its ability to reproduce through its leaves. It can produce new plants from the buds that form on the edges of its leaves. Thus, it does not reproduce by roots.

3. **Rose**: Roses typically reproduce through a method called cutting, where a stem is cut and planted to grow a new plant. They can also reproduce through seeds. Hence, they do not reproduce by roots.

4. **Fern**: Ferns reproduce through spores, not by roots. They have a unique life cycle that involves both a sporophyte and a gametophyte stage. Therefore, ferns do not reproduce by roots.

5. **Sweet Potato**: Sweet potatoes are a type of root vegetable that can reproduce through their roots. They can form new plants from the swollen storage roots, which is a form of vegetative propagation. This means sweet potatoes do reproduce by roots.

Based on this analysis, the plant that reproduces by roots is **Sweet Potato**.

**Final Answer**: Sweet Potato

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