Kew gardens contain some 33,400 taxa of living plants, an herbarium of approximately seven million dried specimens representing 98 per cent of the world's plant genera.

Answer

**Step-by-Step Solution:**

1. **Understanding Kew Gardens**: Kew Gardens, located in London, is a renowned botanical garden known for its extensive collection of living plants and dried specimens.

2. **Identifying the Taxa**: The statement mentions that Kew Gardens contains approximately 33,400 taxa of living plants. Taxa refers to groups of one or more populations of organisms that form a unit.

3. **Herbarium Specimens**: The statement also indicates that Kew Gardens has about seven million dried specimens. A herbarium is a collection of preserved plant specimens that are used for scientific study and reference.

4. **Percentage of World’s Plant Genera**: The claim that these specimens represent 98% of the world's plant genera is significant. Genera is the plural of genus, which is a rank in the biological classification (taxonomy) of living organisms.

5. **Conclusion**: Given the information about Kew Gardens and its collections, we can conclude that the statement provided is true.

**Final Answer**: The statement is true.

---