The seeds of which type of plant have no dormancy

Options

A. Xerophytes
B. Mesophytes
C. Halophytes and hydrophyte
D. Mangroves

Answer

**Step-by-Step Solution:**

1. **Understanding Seed Dormancy**: Seed dormancy is a period during which seeds do not germinate, even under favorable conditions. This is a survival strategy that allows seeds to remain viable until conditions are optimal for germination.

2. **Types of Plants**: The question provides four types of plants: xerophytes, mesophytes, halophytes, and hydrophytes. Each of these types has different adaptations to their environments.

3. **Examining Mangroves**: Mangroves are a type of plant that grows in coastal intertidal zones. They are known for their unique reproductive strategy, where they produce propagules instead of traditional seeds.

4. **Understanding Propagules**: A propagule is a structure that can develop into a new plant. In the case of mangroves, the propagule is an elongated seed pod that remains attached to the parent tree until it is ready to root.

5. **No Dormancy in Mangroves**: Unlike other plants that may have seeds that go through a dormant stage, mangrove propagules do not experience dormancy. They develop into a new plant while still attached to the parent tree, and they can float in water for a period before rooting.

6. **Conclusion**: Based on the characteristics of mangroves and their reproductive strategy, the correct answer to the question is that mangroves are the type of plant whose seeds (or propagules) have no dormancy.

**Final Answer**: Mangroves

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