Question

69. In which group pollen viability occurs for months?
(1) Rosaceae and Poaceae
(2) Poaceae and Leguminosae
(3) Solanaceae and Poaceae
(4) Leguminosae and Solanaceae​

Answer 1

Answer:

answer 1 is correct it is ncert line

Answer 2

In Rosaceae and Poaceae group pollen viability occurs for months.

Option: (1)

Explanation:  

• The viability is the amount of time that a Pollen Grain can survive outside the Pollen sac. Usually Pollen Grain cannot survive more than 30 minutes.  

• Its capability to fertilize the egg lines for only 30 minutes but in case of certain plants this viability can be for months and sometimes in years.  

• This made it possible for this plants attain fertilization for a much longer period of time.

• This made it useful for the farmer to cultivate it properly. Rosaceae and Poaceae fall under this category.