Flowering plants are more successful than other members of the plant world because

Options

A. They are large and have a good vascular tissue system
B. They carry out variety of pollination mechanism
C. The protected plant embryo can survive in the period of unfavourable conditions
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks why flowering plants (angiosperms) are more successful than other types of plants. We need to evaluate the given options to find the correct reason.

2. **Analyzing Option 1:**
- **Statement:** "They are large and have a good vascular tissue system."
- **Explanation:** Flowering plants possess a well-developed vascular system (xylem and phloem), which allows for efficient transport of water, nutrients, and food throughout the plant. This contributes to their growth and survival, making this statement true.

3. **Analyzing Option 2:**
- **Statement:** "They carry out a variety of pollination mechanisms."
- **Explanation:** Angiosperms exhibit diverse pollination strategies, including self-pollination and cross-pollination facilitated by wind, water, and animals (insects). This diversity increases their reproductive success, making this statement also true.

4. **Analyzing Option 3:**
- **Statement:** "The protected plant embryo can survive in periods of unfavorable conditions."
- **Explanation:** Angiosperm seeds are enclosed in a protective seed coat and often contain endosperm, which provides nutrition to the developing embryo. This adaptation allows them to withstand adverse environmental conditions, making this statement true as well.

5. **Conclusion:**
Since all three statements are true and contribute to the success of flowering plants, the correct answer is "all of these."

**Final Answer:** Flowering plants are more successful than other members of the plant world because they have a good vascular tissue system, carry out a variety of pollination mechanisms, and their protected plant embryos can survive in periods of unfavorable conditions. Therefore, the answer is **all of these.**

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