Read the following statements carefully: (A) Pollen grains of rice and wheat lose viability within 30 minutes of their release. (B) In some members of Leguminosae, pollen grains maintain viability for months. (C) Pollen grains of many species can be stored for years in liquid nitrogen at -19^ C . (D) Stored pollen can be used as pollen banks, similar to seed banks, in crop breeding programmes. How many of the above s

Step-by-step solution

Statement (A) is correct as pollen viability in cereals like rice and wheat is about 30 minutes. Statement (B) is correct because members of families like Rosaceae, Leguminosae, and Solanaceae maintain pollen viability for months. Statement (C) is incorrect because pollen grains are stored in liquid nitrogen at -196^ C , not -19^ C . Statement (D) is correct as cryopreserved pollen grains can be used as pollen banks in crop breeding programmes. Thus, three statements (A, B, and D) are correct. Answer: Three