Question

25. How many of the following structures do not
directly participate in sexual reproduction of a
plant?
Calyx, Corolla, Androecium, Gynoecium
(1) One
2 Two
(3) Three
(4) Four​

Answer 1

Answer:

2. androcium and gynoecium

Answer 2

Answer:

Calys and corolla

Because the androecium and gynoecium are the essential whorls and they are the male and female reproductive organs of plants but calyx and corolla are assential whorls they do not participate in reproduction but protect the essential whorls.

I am not perfect but just trying to answer your question :) :) :)