Which part of a plant  grows below the soil and holds the plant straight and upright? 

Which one of the following is an example of a tree?

The lower swollen base of gynoecium is called:

The flat green portion of a leaf is 

The fertilized ovule is 

 The peel of banana is:

Transfer of pollen grains is called: 

Which one of the following is an example of a herb?

The embryo in the seed is protected by:

Name a plant which has nodules on its roots.