Question

Emasculation ensures cross-pollination in
A) Staminate flower
B) Bisexual flower
C) Neuter flower
D) Pistillate flower

Answer 1

Hint:In nature plants reproduce and produce young ones by means pollination. Successful pollination occurs from compatibility between stigma and pollen grains. Incompatibility can result in rejection and has a high influence on commercial crop production. To combat this situation methods of artificial hybridization have been developed.

Complete answer:
Artificial hybridization is defined as the method of crossing plants with different genetic composition and desirable traits that leads to formation of superior off-springs. The process of artificial hybridization can be carried out by emasculation. Emasculation is defined as the method of removal of anthers before the pollen grains are released. This stops the pollination from occurring. Emasculation tends to prevent self-fertilization of the female parent.
Now let us find solution from given options
A) Staminate flower : It is defined as a male flower that contains only stamen so emasculation is not done in this.
B) Bisexual flower : The flower which contains both stamen and carpel that is male and female sexual organs is called bisexual flower. If emasculation is not done in this kind of flower it will undergo self-pollination.
C) Neuter flower : It is a flower in which both stamen and carpel that is male and female sexual structure are absent.
D) Pistillate flower : It is a female flower that contains only a carpel.

Hence the correct answer is option ‘B’ i.e, bisexual flower.

Note:Emasculation is very crucial in artificial hybridization techniques. It makes sure that cross pollination takes place in a flower and results in superior off-springs as compared to the parents. It is performed out by crop breeders to improve crops. This process can be helpful to transfer one or more superior characters from variety to another, improve crop yields and stronger hybrid varieties.