What are the factors to be considered while selecting seeds from a plant?

Which among these two plants have more yield?

         Plant - (i)                                 Plant - (ii)

Explain why the fruits are formed in a plant at different stages of its life? Which stage is suitable for collecting seeds- the first formed, mid formed or those formed at the end of its growing stage? 

Write down the qualities essential for a plant from which seeds are collected.

Explain whether the plants germinate only from seeds, or they sprout from any other parts of the plant?

Is a new guava plant usually produced by planting its stem cutting?

What is the method to produce a new plant with all the qualities of the parent plant?