K.C.S.E Biology Q & A - MODEL 2014PP1QN04
The diagram below illustrates a growing pollen tube.
(a) Name the part labelled B.
(b) Explain the role of the parts labelled A.
(a) Tube nucleus;
(b) One male nucleus fuses with the egg cell nucleus to form a zygote;
The other male nucleus fuses with the polar nuclei to form the endosperm;