Context: The number of species of flowering plants is estimated to be in the range of 250,000 to 400,000. This compares to around 12,000 species of moss or 11,000 species of pteridophytes, showing that the flowering plants are much more diverse. The number of families in APG (1998) was 462. In APG II (2003) it is not settled; at maximum it is 457, but within this number there are 55 optional segregates, so that the minimum number of families in this system is 402. In APG III (2009) there are 415 families.

Question: What is the estimated range for the number of flowering plants?
Answer: 250,000 to 400,000

Question: How many species of moss is there?
Answer: 12,000

Question: What does the large number of flowering plant species indicate is true of them in general?
Answer: diverse

Question: What are the minimum number of families in the APG system?
Answer: 402

Question: How many families are in AGP III?
Answer: 415

Question: How is moss seen more than families in the system?
Answer: Unanswerable

Question: What is true about families more than moss or pteridophytes?
Answer: Unanswerable

Question: How many flowering plants are in APG in 1998?
Answer: Unanswerable

Question: What are the minimum number of species of moss in the APG system?
Answer: Unanswerable

Question: In APG III how many species of flowering plants are there?
Answer: Unanswerable