What is protandry?

What is meant by protandry and protogyny?

With the help of a suitable example, explain protandry.

What is reproduction? What are the types in it?

What is periodicity? What is the cause for it?

(A) What is the function of velamen ? (B) What is plerome ? (C) What is quiescent centre ? (D) What is the function of collenchyma ? (E) What is the chemical nature of cuticle ?

Distinguish between protandry and protogyny.

Give the advantage of protogyny and protandry.

Give the advantage of protogyne and protandry.