Sago is obtained from

In a flowering plants megaspore undergoes mitosis and develops into a

In a seed plant the microspore gives rise to the

In gymnosperms, the ovule is naked because

In Spirogyra sexual reproduction takes place by

In which of the following groups would you place a plant which produces seeds but lacks flowers?

Gymnosperm seeds are naked due to lack of

Maiden hair, an oriental tree is also often called

Sexual reproduction in Spirogyra is an advanced feature because it shows:

Algae have cell wall made up of