What type of mutation causes a change in the number of chromosomes?

Chromosome mutations can result in changes in the number of chromosomes in a  cell  or changes in the structure of a chromosome. Unlike a  gene mutation  which alters a single gene or larger segment of  DNA  on a chromosome, chromosome mutations change and impact the entire chromosome. Key Takeaways: Chromosome Mutations

because the light is a great source of energy for the plants to survive. (i hope this )